Journal of Prosthetic Dentistry最新文献

{"title":"Survival and complications of tooth- and implant-supported ceramic restorations: A systematic review and meta-analysis","authors":"Camila da Silva Rodrigues DDS, MSc, PhD, Manassés Tercio Vieira Grangeiro DDS, MSc, PhD, Jatyr Pisani Proença DDS, MSc, PhD, Catina Prochnow DDS, MSc, PhD","doi":"10.1016/j.prosdent.2026.07.014","DOIUrl":"10.1016/j.prosdent.2026.07.014","url":null,"abstract":"<div><h3>Statement of problem</h3><div>During oral rehabilitation, clinicians manage various substrates including natural teeth and implants. Biomechanical differences might influence stress distribution within ceramic materials.</div></div><div>During oral rehabilitation, clinicians manage various substrates including natural teeth and implants. Biomechanical differences might influence stress distribution within ceramic materials.</div><div><h3>Purpose</h3><div>This systematic review compared the frequency of failures and fracture-related complications of tooth- and implant-supported ceramic restorations.</div></div><div>This systematic review compared the frequency of failures and fracture-related complications of tooth- and implant-supported ceramic restorations.</div><div><h3>Material and methods</h3><div>A search was conducted in MEDLINE/PubMed, Scopus, Web of Science, Embase, and LILACS databases to identify studies meeting the inclusion criteria. The PICOS question included: Population—multiple or single-unit, monolithic or bilayered, ceramic restorations; Intervention—implant-supported restorations; Comparison—tooth-supported restorations; Outcome—number of failures and number of complications; Study design—clinical trials or observational studies. Risk of bias was assessed with the Newcastle-Ottawa Scale and the confidence of the cumulative evidence was evaluated with GRADEpro. Meta-analyses were conducted separately for lithium disilicate, alumina, and zirconia ceramics comparing the outcomes of failures, technical failures, and complications associated with repairable fractures.</div></div><div>A search was conducted in MEDLINE/PubMed, Scopus, Web of Science, Embase, and LILACS databases to identify studies meeting the inclusion criteria. The PICOS question included: Population—multiple or single-unit, monolithic or bilayered, ceramic restorations; Intervention—implant-supported restorations; Comparison—tooth-supported restorations; Outcome—number of failures and number of complications; Study design—clinical trials or observational studies. Risk of bias was assessed with the Newcastle-Ottawa Scale and the confidence of the cumulative evidence was evaluated with GRADEpro. Meta-analyses were conducted separately for lithium disilicate, alumina, and zirconia ceramics comparing the outcomes of failures, technical failures, and complications associated with repairable fractures.</div><div><h3>Results</h3><div>The search yielded 2073 records. Of these, 38 studies were selected for full-text reading, and 25 were included in this review (17 quantitatively and 8 qualitatively analyzed). In all analyses, the heterogeneity among studies was low, and no significant differences were found between tooth- and implant-supported substrates. Risk of bias was mostly low, and confidence of evidence was considered low to moderate by GRADE assessment.</div></div><div>The search yielded 2073 records. Of these, 38 studies were selected for full-text reading","PeriodicalId":16866,"journal":{"name":"Journal of Prosthetic Dentistry","volume":"136 4","pages":"Pages 1017-1031"},"PeriodicalIF":5.6,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148684724","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A technique to enhance stability and esthetics of an interim obturator","authors":"Soundhar Rajan R MDS,&nbsp;Veena Jain MDS,&nbsp;Aditi Nanda MDS,&nbsp;Rani Kumari Gupta MDS","doi":"10.1016/j.prosdent.2026.06.041","DOIUrl":"10.1016/j.prosdent.2026.06.041","url":null,"abstract":"<div><div>The rehabilitation of a hemimaxillectomy defect is more challenging than providing a conventional prosthesis. Maxillary obturators can be fabricated using various techniques. For this patient, a hollow obturator prosthesis was constructed by adding a bow and clasp along with an acrylic resin pad to provide additional support. The bow was made from 23-gauge stainless steel wrought wire and the clasp from 21-gauge. To enhance the esthetics, the interdental papilla was carved by eliminating the clasp arm from the primary anterior abutment. The compensatory retention, stability, and support were provided by the addition of the acrylic resin bow.</div></div><div>The rehabilitation of a hemimaxillectomy defect is more challenging than providing a conventional prosthesis. Maxillary obturators can be fabricated using various techniques. For this patient, a hollow obturator prosthesis was constructed by adding a bow and clasp along with an acrylic resin pad to provide additional support. The bow was made from 23-gauge stainless steel wrought wire and the clasp from 21-gauge. To enhance the esthetics, the interdental papilla was carved by eliminating the clasp arm from the primary anterior abutment. The compensatory retention, stability, and support were provided by the addition of the acrylic resin bow.</div>","PeriodicalId":16866,"journal":{"name":"Journal of Prosthetic Dentistry","volume":"136 4","pages":"Pages e133-e135"},"PeriodicalIF":5.6,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148706823","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of liquid scanning-aid material and four variables on the scanning trueness of post space with intraoral scanning","authors":"Junbin Zou MS,&nbsp;Ke Huang MS,&nbsp;Jinliang Chen MS,&nbsp;Lu Yin PhD","doi":"10.1016/j.prosdent.2026.07.028","DOIUrl":"10.1016/j.prosdent.2026.07.028","url":null,"abstract":"&lt;div&gt;&lt;h3&gt;Statement of problem&lt;/h3&gt;&lt;div&gt;Current evidence for post space scanning indications is limited. Past studies have focused primarily on opening diameter and depth, overlooking key clinical factors such as adjacent teeth and taper, as well as potential enhancements like scanning-aid material. The combined impact of these variables on scanning trueness remains unclear.&lt;/div&gt;&lt;/div&gt;&lt;div&gt;Current evidence for post space scanning indications is limited. Past studies have focused primarily on opening diameter and depth, overlooking key clinical factors such as adjacent teeth and taper, as well as potential enhancements like scanning-aid material. The combined impact of these variables on scanning trueness remains unclear.&lt;/div&gt;&lt;div&gt;&lt;h3&gt;Purpose&lt;/h3&gt;&lt;div&gt;The purpose of this in vitro study was to investigate the effect of liquid scanning-aid material and 4 variables on post space scanning trueness with the TRIOS 5 intraoral scanner.&lt;/div&gt;&lt;/div&gt;&lt;div&gt;The purpose of this in vitro study was to investigate the effect of liquid scanning-aid material and 4 variables on post space scanning trueness with the TRIOS 5 intraoral scanner.&lt;/div&gt;&lt;div&gt;&lt;h3&gt;Material and methods&lt;/h3&gt;&lt;div&gt;A standard maxillary dentition model was scanned to obtain data. The right maxillary central incisor was virtually prepared into a residual root post space using a software program, and 4 parameters were set: 2 groups each for post space opening diameter (2.0 mm and 2.5 mm), depth (8.0 mm and 10.0 mm), adjacent tooth status (bilateral adjacent teeth present and absent), and taper (0.04 and 0.08 mm/mm), totaling 16 models. Resin models were fabricated using a high-precision printer. Before and after applying the liquid scanning-aid material, the models were scanned in vitro using the TRIOS 5 scanner (&lt;em&gt;n&lt;/em&gt;=10). Trueness was obtained by calculating the average root mean square error (RMSE) through fitting. Two-dimensional cross-sections were constructed to assess the deviation at the bottom of the post space. The Kruskal–Wallis H test was used for univariate analysis, and a mixed-effects model for multifactorial interactions; post hoc pairwise comparisons were performed with the Mann–Whitney &lt;em&gt;U&lt;/em&gt; test with Bonferroni correction (α=.05).&lt;/div&gt;&lt;/div&gt;&lt;div&gt;A standard maxillary dentition model was scanned to obtain data. The right maxillary central incisor was virtually prepared into a residual root post space using a software program, and 4 parameters were set: 2 groups each for post space opening diameter (2.0 mm and 2.5 mm), depth (8.0 mm and 10.0 mm), adjacent tooth status (bilateral adjacent teeth present and absent), and taper (0.04 and 0.08 mm/mm), totaling 16 models. Resin models were fabricated using a high-precision printer. Before and after applying the liquid scanning-aid material, the models were scanned in vitro using the TRIOS 5 scanner (&lt;em&gt;n&lt;/em&gt;=10). Trueness was obtained by calculating the average root mean square error (RMSE) through fitting. Two-dimensional cro","PeriodicalId":16866,"journal":{"name":"Journal of Prosthetic Dentistry","volume":"136 4","pages":"Pages 1191-1199"},"PeriodicalIF":5.6,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148759679","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Goal-oriented digital orthodontic intrusion system for supra-erupted maxillary molars with temporary anchorage devices: A technique report","authors":"Xiaoyan Feng MDS,&nbsp;Ao Sun MDS,&nbsp;Luxi Weng DDS,&nbsp;Leilei Xue MDS,&nbsp;Jun Lin DDS,&nbsp;Huiyong Zhu DDS","doi":"10.1016/j.prosdent.2026.06.038","DOIUrl":"10.1016/j.prosdent.2026.06.038","url":null,"abstract":"<div><div>Permanent molar loss is commonly encountered in clinical practice, and eruption of the opposing teeth caused by their prolonged absence increases the complexity of restorative treatment. How to rapidly and efficiently regain precise restorative space presents a clinical challenge. Orthodontic temporary anchorage devices (TADs) have been regarded as a minimally invasive treatment alternative with absolute anchorage and can simplify orthodontic intrusion. This digital technique aims to simulate the definitive restorative treatment outcome using a digital workflow that guides the design and 3-dimensional (3D) printing of a metal occlusal veneer with implant guides to intrude the target teeth. This intrusion system enables the precise control of the target tooth movement, thereby facilitating subsequent restorative treatment and ensuring a more favorable outcome.</div></div><div>Permanent molar loss is commonly encountered in clinical practice, and eruption of the opposing teeth caused by their prolonged absence increases the complexity of restorative treatment. How to rapidly and efficiently regain precise restorative space presents a clinical challenge. Orthodontic temporary anchorage devices (TADs) have been regarded as a minimally invasive treatment alternative with absolute anchorage and can simplify orthodontic intrusion. This digital technique aims to simulate the definitive restorative treatment outcome using a digital workflow that guides the design and 3-dimensional (3D) printing of a metal occlusal veneer with implant guides to intrude the target teeth. This intrusion system enables the precise control of the target tooth movement, thereby facilitating subsequent restorative treatment and ensuring a more favorable outcome.</div>","PeriodicalId":16866,"journal":{"name":"Journal of Prosthetic Dentistry","volume":"136 4","pages":"Pages e4-e9"},"PeriodicalIF":5.6,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148829612","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Annual review of selected scientific literature: A report of the Committee on Scientific Investigation of the American Academy of Restorative Dentistry","authors":"David R. Cagna DMD, MS,&nbsp;James R. McKee DDS,&nbsp;James E. Metz DDS,&nbsp;Riccardo Marzola DDS,&nbsp;Matthias Tröltzsch MD, DMD, PhD,&nbsp;Ashley B. Hoders DMD, MS,&nbsp;Todd R. Schoenbaum DDS, MS,&nbsp;Alvaro Blasi DDS, CDT, PhD,&nbsp;Karina Irusa BDS, MS,&nbsp;Vincent P. Torresyap DMD, MHSA, FRCD(C),&nbsp;Taiseer A. Sulaiman DDS, PhD, FICD","doi":"10.1016/j.prosdent.2026.08.003","DOIUrl":"10.1016/j.prosdent.2026.08.003","url":null,"abstract":"<div><div>The Scientific Investigation Committee of the American Academy of Restorative Dentistry presents this review of selected 2025 dental literature. This, our sixty-ninth published report, remains focused on topics of interest to modern restorative dentists and prosthodontists. Each committee member contributes discipline-specific expertise in their respective fields, including (in order of presentation): conventional prosthodontics; implant prosthodontics; operative dentistry and direct restorative materials; caries and cariology; periodontics, alveolar bone, and peri-implant tissues; occlusion and temporomandibular disorders; sleep medicine and related topics; and oral and maxillofacial surgery, medicine, and radiology. The report aims to inform complex diagnoses and daily dental treatment decisions, emphasizing current innovations, new materials and processes, emerging technologies, and future trends likely to impact restorative dentistry. Given the extensive volume of literature published daily in dentistry and related fields, our report cannot be comprehensive. Instead, its purpose is to inform and update interested readers, serving as a useful starting point for those who may seek more detailed information independently. Our goal is to help colleagues navigate the vast amount of new information available annually. Ultimately, we hope this work assists readers in delivering evidence-based care to patients seeking healthier, happier lives.</div></div><div>The Scientific Investigation Committee of the American Academy of Restorative Dentistry presents this review of selected 2025 dental literature. This, our sixty-ninth published report, remains focused on topics of interest to modern restorative dentists and prosthodontists. Each committee member contributes discipline-specific expertise in their respective fields, including (in order of presentation): conventional prosthodontics; implant prosthodontics; operative dentistry and direct restorative materials; caries and cariology; periodontics, alveolar bone, and peri-implant tissues; occlusion and temporomandibular disorders; sleep medicine and related topics; and oral and maxillofacial surgery, medicine, and radiology. The report aims to inform complex diagnoses and daily dental treatment decisions, emphasizing current innovations, new materials and processes, emerging technologies, and future trends likely to impact restorative dentistry. Given the extensive volume of literature published daily in dentistry and related fields, our report cannot be comprehensive. Instead, its purpose is to inform and update interested readers, serving as a useful starting point for those who may seek more detailed information independently. Our goal is to help colleagues navigate the vast amount of new information available annually. Ultimately, we hope this work assists readers in delivering evidence-based care to patients seeking healthier, happier lives.</div>","PeriodicalId":16866,"journal":{"name":"Journal of Prosthetic Dentistry","volume":"136 4","pages":"Pages 923-996"},"PeriodicalIF":5.6,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148906499","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Biomechanical behavior of various post-and-core systems in severely compromised mandibular molars: A 3D finite element analysis","authors":"Konstantinos Krommydas,&nbsp;Athina Niakou DDS,&nbsp;Athanasios Stratos DDS, MBA,&nbsp;Savvas N. Kamalakidis DDS, MPH, PhD,&nbsp;Argirios Pissiotis DDS, MSc, PhD,&nbsp;Konstantinos Michalakis DDS, MSc, MSc, MBA, PhD,&nbsp;Alexander Tsouknidas MSc, PhD","doi":"10.1016/j.prosdent.2026.06.031","DOIUrl":"10.1016/j.prosdent.2026.06.031","url":null,"abstract":"<div><h3>Statement of problem</h3><div>Selecting a post-and-core system for endodontically treated posterior teeth remains challenging. Cast post-and-core (CPC) and fiber post with composite resin core (FPCC) systems are used to restore structurally compromised teeth. Their biomechanical interactions with the remaining tooth structure under functional loading remain poorly understood.</div></div><div><h3>Purpose</h3><div>The purpose of this finite element analysis study was to assess how CPC and FPCC restorations influence internal stresses and interfacial stress distributions in a restored mandibular first molar under functional loading.</div></div><div><h3>Material and methods</h3><div>A fully dentate mandibular model (W10532; 3B Scientific GmbH) was reconstructed using microcomputed tomography (TomoScope H; Werth Inc). A mandibular first molar was restored with a CPC or an FPCC, each supporting a complete coverage monolithic lithium disilicate crown. Finite element analysis simulated occlusal loading during masticatory function using physiologic loading vectors and validated boundary conditions. Anatomically accurate geometries and anisotropic material definitions were incorporated. The models were meshed with a converged finite element grid (&lt;0.2%). Maximum principal stress was evaluated in enamel, dentin, bone, and periodontal ligament, while von Mises stress quantified internal post-and-core behavior. Stress and strain distributions were compared among restorations, with emphasis on internal post stresses and interfacial tensile stresses at the crown–core–post junction.</div></div><div><h3>Results</h3><div>The CPC model exhibited a 234% increase in internal post stresses compared to the FPCC model. Dentin stress levels remained similar between the systems, varying by about 4%. The FPCC model demonstrated a 15.2% increase in tensile stress at the crown–core–post interface and a 63.8% increase along the apical crown margin. These elevated interfacial stresses coincided with micromovement at bonded interfaces.</div></div><div><h3>Conclusions</h3><div>Based on the findings of this finite element analysis study, CPC restorations concentrate higher internal stresses. In contrast, FPCC restorations reduce internal post stress but increase interfacial tensile stresses. Dentin stresses remained consistent across systems, indicating that the main difference is in failure mode.</div></div>","PeriodicalId":16866,"journal":{"name":"Journal of Prosthetic Dentistry","volume":"136 4","pages":"Pages e28-e36"},"PeriodicalIF":5.6,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148447609","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dissociation of functional and static mechanical risk indicators for temporomandibular disorders: A cross-sectional study using DC/TMD","authors":"Lingyue Zhang BDS,&nbsp;Liqi Chen BDS,&nbsp;Yixuan Li BDS,&nbsp;Sitong Liu BDS,&nbsp;Chi Zhang BDS,&nbsp;Chongao Zhang BDS,&nbsp;Xuewu Zhuo BDS,&nbsp;Jinlong Shao BDS, MDS, PhD","doi":"10.1016/j.prosdent.2026.06.010","DOIUrl":"10.1016/j.prosdent.2026.06.010","url":null,"abstract":"&lt;div&gt;&lt;h3&gt;Statement of problem&lt;/h3&gt;&lt;div&gt;The relative contributions of sustained static mechanical loading and dynamic functional activities to temporomandibular disorders (TMD) risk remain unclear.&lt;/div&gt;&lt;/div&gt;&lt;div&gt;The relative contributions of sustained static mechanical loading and dynamic functional activities to temporomandibular disorders (TMD) risk remain unclear.&lt;/div&gt;&lt;div&gt;&lt;h3&gt;Purpose&lt;/h3&gt;&lt;div&gt;The purpose of this cross-sectional study was to investigate TMD prevalence in medical students and differentiate the risk contributions of self-reported dynamic functional activities and sustained static mechanical loading.&lt;/div&gt;&lt;/div&gt;&lt;div&gt;The purpose of this cross-sectional study was to investigate TMD prevalence in medical students and differentiate the risk contributions of self-reported dynamic functional activities and sustained static mechanical loading.&lt;/div&gt;&lt;div&gt;&lt;h3&gt;Material and methods&lt;/h3&gt;&lt;div&gt;A cross-sectional study of 220 medical students was conducted. TMD was diagnosed using the DC/TMD Axis I protocol. Psychological status, oral behaviors, and suicide risk were assessed with the Depression, Anxiety, and Stress Scale-21, Oral Behavior Checklist (OBC), and Suicidal Behaviors Questionnaire-Revised. Data were analyzed using univariable and multivariable logistic regression (α=.05).&lt;/div&gt;&lt;/div&gt;&lt;div&gt;A cross-sectional study of 220 medical students was conducted. TMD was diagnosed using the DC/TMD Axis I protocol. Psychological status, oral behaviors, and suicide risk were assessed with the Depression, Anxiety, and Stress Scale-21, Oral Behavior Checklist (OBC), and Suicidal Behaviors Questionnaire-Revised. Data were analyzed using univariable and multivariable logistic regression (α=.05).&lt;/div&gt;&lt;div&gt;&lt;h3&gt;Results&lt;/h3&gt;&lt;div&gt;TMD prevalence was 42.3%. In univariable analysis, the TMD group exhibited significantly higher scores for static nonfunctional behaviors, specifically self-reported jaw-loading sleep position (&lt;em&gt;P&lt;/em&gt;=.004) and awake jaw rigidity (&lt;em&gt;P&lt;/em&gt;=.003). Self-reported dynamic functional activities (&lt;em&gt;P&lt;/em&gt;=.071 to .643) and sleep bruxism (&lt;em&gt;P&lt;/em&gt;=.099) showed no significant associations. In the multivariable model, female sex (adjusted odds ratio=2.695; &lt;em&gt;P&lt;/em&gt;=.003) remained the sole independent predictor, rendering static behaviors statistically nonsignificant (OBC &lt;em&gt;P&lt;/em&gt;=.201).&lt;/div&gt;&lt;/div&gt;&lt;div&gt;TMD prevalence was 42.3%. In univariable analysis, the TMD group exhibited significantly higher scores for static nonfunctional behaviors, specifically self-reported jaw-loading sleep position (&lt;em&gt;P&lt;/em&gt;=.004) and awake jaw rigidity (&lt;em&gt;P&lt;/em&gt;=.003). Self-reported dynamic functional activities (&lt;em&gt;P&lt;/em&gt;=.071 to .643) and sleep bruxism (&lt;em&gt;P&lt;/em&gt;=.099) showed no significant associations. In the multivariable model, female sex (adjusted odds ratio=2.695; &lt;em&gt;P&lt;/em&gt;=.003) remained the sole independent predictor, rendering static behaviors statistically nonsignificant (OBC &lt;em&gt;P&lt;/em&gt;=.201).&lt;/div&gt;&lt;div&gt;&lt;h3&gt;Conclusions&lt;/h3&gt;&lt;div&gt;","PeriodicalId":16866,"journal":{"name":"Journal of Prosthetic Dentistry","volume":"136 4","pages":"Pages 1113-1120"},"PeriodicalIF":5.6,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148421779","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Automated extraction and evaluation of anterior esthetic parameters: A computer vision approach","authors":"Wenjia Chen MDS,&nbsp;Tian Zhou PhD,&nbsp;Mengyu Liang MSc,&nbsp;Yi Zhou DDS, MD,&nbsp;Jiajun Zhu DDS, MD,&nbsp;Baoshan Weng MDS,&nbsp;Chao Liu DDS, MD,&nbsp;Haiping Yang DDS, MD","doi":"10.1016/j.prosdent.2026.07.009","DOIUrl":"10.1016/j.prosdent.2026.07.009","url":null,"abstract":"&lt;div&gt;&lt;h3&gt;Statement of problem&lt;/h3&gt;&lt;div&gt;Assessment of anterior dental and gingival esthetics has been commonly based on visual judgment and manual measurements. These approaches are time-consuming and show considerable examiner-dependent variation.&lt;/div&gt;&lt;/div&gt;&lt;div&gt;Assessment of anterior dental and gingival esthetics has been commonly based on visual judgment and manual measurements. These approaches are time-consuming and show considerable examiner-dependent variation.&lt;/div&gt;&lt;div&gt;&lt;h3&gt;Purpose&lt;/h3&gt;&lt;div&gt;The purpose of this study was to develop and validate a computer vision-based approach for automated extraction of anterior tooth morphologic parameters and the Pink Esthetic Score (PES) and the White Esthetic Score (WES) from intraoral scan data.&lt;/div&gt;&lt;/div&gt;&lt;div&gt;The purpose of this study was to develop and validate a computer vision-based approach for automated extraction of anterior tooth morphologic parameters and the Pink Esthetic Score (PES) and the White Esthetic Score (WES) from intraoral scan data.&lt;/div&gt;&lt;div&gt;&lt;h3&gt;Material and methods&lt;/h3&gt;&lt;div&gt;Intraoral scans from 490 maxillary anterior teeth (245 pairs) of orthodontic patients were analyzed. An automated approach extracted dental and gingival contours, length-to-width ratios, and geometric and relative color differences (ΔE&lt;sub&gt;00&lt;/sub&gt;, ΔL, Δa) compared with corresponding contralateral homologous teeth. Agreement between automated and manual measurements was evaluated using Bland–Altman analysis. The 245 pairs were randomly divided into exploration (&lt;em&gt;n&lt;/em&gt;=175 pairs) and validation (&lt;em&gt;n&lt;/em&gt;=70 pairs) sets. In the exploration set, logistic regression models combined with descriptive statistics established quantitative grading thresholds based on expert scores. In the validation set, agreement and reliability between automated and expert consensus scores were assessed using weighted Cohen kappa (κ) and intraclass correlation coefficients (ICC). Bland–Altman analysis and the Wilcoxon signed–rank test evaluated systematic bias. Furthermore, a &lt;em&gt;Z&lt;/em&gt; test was performed to compare inter-examiner agreement with and without visual contour assistance across 245 pairs (α=.05).&lt;/div&gt;&lt;/div&gt;&lt;div&gt;Intraoral scans from 490 maxillary anterior teeth (245 pairs) of orthodontic patients were analyzed. An automated approach extracted dental and gingival contours, length-to-width ratios, and geometric and relative color differences (ΔE&lt;sub&gt;00&lt;/sub&gt;, ΔL, Δa) compared with corresponding contralateral homologous teeth. Agreement between automated and manual measurements was evaluated using Bland–Altman analysis. The 245 pairs were randomly divided into exploration (&lt;em&gt;n&lt;/em&gt;=175 pairs) and validation (&lt;em&gt;n&lt;/em&gt;=70 pairs) sets. In the exploration set, logistic regression models combined with descriptive statistics established quantitative grading thresholds based on expert scores. In the validation set, agreement and reliability between automated and expert consensus scores were assessed using weighted Cohe","PeriodicalId":16866,"journal":{"name":"Journal of Prosthetic Dentistry","volume":"136 4","pages":"Pages e61-e71"},"PeriodicalIF":5.6,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148630582","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of fixed prosthetic restorations on early patient-reported outcomes following free gingival graft surgery: A prospective parallel-group clinical study","authors":"Serap Karakıs Akcan DDS, PhD,&nbsp;Busra Terzioglu DDS, PhD,&nbsp;Berceste Guler Ayyildiz DDS, PhD","doi":"10.1016/j.prosdent.2026.07.021","DOIUrl":"10.1016/j.prosdent.2026.07.021","url":null,"abstract":"&lt;div&gt;&lt;h3&gt;Statement of problem&lt;/h3&gt;&lt;div&gt;Fixed dental prostheses create a different pericervical environment, yet studies comparing patient-reported outcome measures (PROMs) after free gingival grafting (FGG) between restored and nonrestored teeth remain limited.&lt;/div&gt;&lt;/div&gt;&lt;div&gt;Fixed dental prostheses create a different pericervical environment, yet studies comparing patient-reported outcome measures (PROMs) after free gingival grafting (FGG) between restored and nonrestored teeth remain limited.&lt;/div&gt;&lt;div&gt;&lt;h3&gt;Purpose&lt;/h3&gt;&lt;div&gt;The purpose of this prospective parallel-group clinical study was to compare early postoperative PROMs, pain, and patient satisfaction after FGG in restored and nonrestored teeth.&lt;/div&gt;&lt;/div&gt;&lt;div&gt;The purpose of this prospective parallel-group clinical study was to compare early postoperative PROMs, pain, and patient satisfaction after FGG in restored and nonrestored teeth.&lt;/div&gt;&lt;div&gt;&lt;h3&gt;Material and methods&lt;/h3&gt;&lt;div&gt;This study included 49 systemically healthy participants undergoing FGG at sites with keratinized tissue width (KTW) &lt;1 mm. The participants were allocated to a restored tooth group (RTG) or a nonrestored tooth group (NTG). Clinical parameters were recorded at baseline (T0) and at 30 days (T30). Graft dimensions were recorded intraoperatively. Postoperative pain, analgesic consumption, and PROMs using the Oral Health Impact Profile (OHIP-14) were assessed at T0, T1, T7, and T30.&lt;/div&gt;&lt;/div&gt;&lt;div&gt;This study included 49 systemically healthy participants undergoing FGG at sites with keratinized tissue width (KTW) &lt;1 mm. The participants were allocated to a restored tooth group (RTG) or a nonrestored tooth group (NTG). Clinical parameters were recorded at baseline (T0) and at 30 days (T30). Graft dimensions were recorded intraoperatively. Postoperative pain, analgesic consumption, and PROMs using the Oral Health Impact Profile (OHIP-14) were assessed at T0, T1, T7, and T30.&lt;/div&gt;&lt;div&gt;&lt;h3&gt;Results&lt;/h3&gt;&lt;div&gt;Baseline OHIP-14 scores (functional limitation and behavioral impact) were significantly higher in the RTG. Generalized estimating equation analysis showed a significant time effect for total OHIP-14 scores (Wald χ²=32.943, &lt;em&gt;P&lt;/em&gt;&lt;.001), with no significant group or interaction effects &lt;strong&gt;(&lt;/strong&gt;group, &lt;em&gt;P&lt;/em&gt;=.102; interaction, &lt;em&gt;P&lt;/em&gt;=.240). Scores peaked at T1, improved by T7, and approached baseline at T30. Postoperative pain (Wald χ²=55.074, &lt;em&gt;P&lt;/em&gt;&lt;.001) and analgesic consumption (Wald χ²=45.056, &lt;em&gt;P&lt;/em&gt;&lt;.001) also showed significant time effects without group differences. Regression analysis identified mean analgesic consumption as the only predictor of patient satisfaction.&lt;/div&gt;&lt;/div&gt;&lt;div&gt;Baseline OHIP-14 scores (functional limitation and behavioral impact) were significantly higher in the RTG. Generalized estimating equation analysis showed a significant time effect for total OHIP-14 scores (Wald χ²=32.943, &lt;em&gt;P&lt;/em&gt;&lt;.001), with no significant group or interaction e","PeriodicalId":16866,"journal":{"name":"Journal of Prosthetic Dentistry","volume":"136 4","pages":"Pages 1121-1132"},"PeriodicalIF":5.6,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148794691","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Equivalence of linear facial measurements obtained from smartphone-based 3-dimensional facial scanners and professional extraoral scanners: A retrospective clinical study","authors":"Justine Bouscasse DDS,&nbsp;Virginie Chuy DDS, PhD,&nbsp;Louise Viel DDS,&nbsp;Adrien Laran DDS,&nbsp;Adrien Naveau DDS, PhD","doi":"10.1016/j.prosdent.2026.07.015","DOIUrl":"10.1016/j.prosdent.2026.07.015","url":null,"abstract":"&lt;div&gt;&lt;h3&gt;Statement of problem&lt;/h3&gt;&lt;div&gt;Three-dimensional (3D) facial scanning has been increasingly integrated into digital dental workflows. Smartphone-based 3D facial scanning applications offer an accessible alternative to professional extraoral scanners; however, their metric validity for clinically relevant facial measurements remains unclear.&lt;/div&gt;&lt;/div&gt;&lt;div&gt;Three-dimensional (3D) facial scanning has been increasingly integrated into digital dental workflows. Smartphone-based 3D facial scanning applications offer an accessible alternative to professional extraoral scanners; however, their metric validity for clinically relevant facial measurements remains unclear.&lt;/div&gt;&lt;div&gt;&lt;h3&gt;Purpose&lt;/h3&gt;&lt;div&gt;The purpose of this retrospective clinical study was to determine whether linear facial measurements obtained from smartphone-based 3D facial scanning applications were statistically equivalent to those obtained from professional extraoral facial scanners.&lt;/div&gt;&lt;/div&gt;&lt;div&gt;The purpose of this retrospective clinical study was to determine whether linear facial measurements obtained from smartphone-based 3D facial scanning applications were statistically equivalent to those obtained from professional extraoral facial scanners.&lt;/div&gt;&lt;div&gt;&lt;h3&gt;Material and methods&lt;/h3&gt;&lt;div&gt;Facial scans from 23 participants, obtained via repeated scanning with smartphone-based scanners (Qlone, Magiscan, 3D App Scanner, on iPhone 13 Pro; Apple Inc) and professional scanners (Artec Spider; Artec, EinStar; Shining 3D), were retrospectively analyzed. Four facial distances (trichion–nasion, nasion–pronasion, pronasion–pogonion, and right zygomatic–left zygomatic) were measured on all scans. The equivalence of these distances between smartphone-based scanners and each professional scanner was assessed using the two 1-sided &lt;em&gt;t&lt;/em&gt; tests (TOST) procedure with a predefined equivalence margin of ±1 mm and Bonferroni-adjusted significance levels.&lt;/div&gt;&lt;/div&gt;&lt;div&gt;Facial scans from 23 participants, obtained via repeated scanning with smartphone-based scanners (Qlone, Magiscan, 3D App Scanner, on iPhone 13 Pro; Apple Inc) and professional scanners (Artec Spider; Artec, EinStar; Shining 3D), were retrospectively analyzed. Four facial distances (trichion–nasion, nasion–pronasion, pronasion–pogonion, and right zygomatic–left zygomatic) were measured on all scans. The equivalence of these distances between smartphone-based scanners and each professional scanner was assessed using the two 1-sided &lt;em&gt;t&lt;/em&gt; tests (TOST) procedure with a predefined equivalence margin of ±1 mm and Bonferroni-adjusted significance levels.&lt;/div&gt;&lt;div&gt;&lt;h3&gt;Results&lt;/h3&gt;&lt;div&gt;Across all distances, smartphone-based and professional scanners were statistically equivalent, with absolute mean differences below 0.12 mm (90% confidence interval: −0.03 to 0.26; &lt;em&gt;P&lt;/em&gt;&lt;.001 for all comparisons).&lt;/div&gt;&lt;/div&gt;&lt;div&gt;Across all distances, smartphone-based and professional scanners were statistically equivalent, with absol","PeriodicalId":16866,"journal":{"name":"Journal of Prosthetic Dentistry","volume":"136 4","pages":"Pages 1200-1206"},"PeriodicalIF":5.6,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148697558","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}