Dentistry Journal最新文献

{"title":"Micro- and Macroabrasion in the Esthetic Zone: A Narrative Review and Case Study.","authors":"Jose Villalobos-Tinoco, Carlos A Jurado, Silvia Rojas-Rueda, Nechama S Citrin, Staley Colvert, Jose Luis Gutierrez-Quintero, Salwa Mekled","doi":"10.3390/dj13050183","DOIUrl":"10.3390/dj13050183","url":null,"abstract":"<p><p><b>Background:</b> Micro- and macroabrasion represent a minimally invasive treatment approach for stained teeth in the esthetic zone. Diagnosing the type of stain is crucial for selecting the appropriate treatment approach. These clinical procedures involve several meticulous steps that may be confusing for less experienced clinicians. <b>Methods:</b> The objective of this article is to provide an updated review of the literature on the clinical procedures for micro- and macroabrasion and to present a clinical case in which a minimally invasive macroabrasion procedure was applied to treat a female patient seeking to remove stains from her anterior teeth. Preliminary reviews were conducted of existing case reports and reviews evaluating the clinical procedures and outcomes of micro- and macroabrasion. <b>Results:</b> A review of the literature reveals minor differences in how stains on anterior teeth are addressed. Depending on the depth of the stain, microabrasion is typically used for superficial stains, while macroabrasion is employed for deeper stains. Clinicians often combine micro- or macroabrasion with tooth whitening procedures. Literature reviews agree that micro- and macroabrasion techniques are effective minimally invasive approaches that yield high esthetic results. The case study demonstrated each clinical step of microabrasion, achieving results that fully satisfied the patient's esthetic demands. <b>Conclusions:</b> Micro- and macroabrasion can be effective and minimally invasive methods for treating stained anterior teeth. Superficial stains can be treated with microabrasion, while deeper stains may require macroabrasion. In some clinical scenarios, tooth whitening can also be combined with these treatments.</p>","PeriodicalId":11269,"journal":{"name":"Dentistry Journal","volume":"13 5","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12110105/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144149612","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mandibular Kinematics on an Orthodontic Population Assessed with an Optical Jaw Tracking System: A Comparative Study.","authors":"Joana Silva, Ariana Azevedo, Eugénio Martins, Alberto Canabez, Domingo Martin, Conchita Martin","doi":"10.3390/dj13050184","DOIUrl":"10.3390/dj13050184","url":null,"abstract":"<p><p><b>Objective</b>: To evaluate mandibular kinematics in an orthodontic population using the Modjaw^® optical jaw tracking system. <b>Materials and methods</b>: A total of 154 orthodontic patients underwent mandibular kinematic analysis using the Modjaw^® system. ANB values determined skeletal classification, while dental classification was assessed on digital casts. The Modjaw^® records were taken as instructed by the manufacturer, and data collected from the readings included the discrepancy between centric occlusion and maximum intercuspation, maximum opening, Bennett angles, and sagittal condylar guidance. The presence or absence of temporomandibular disorders was determined by the DC-TMD questionnaires. Non-parametric tests and Spearman correlations were applied for the statistical analysis. <b>Results</b>: Significant differences in mandibular kinematics were observed between skeletal classes, particularly in CO-MI discrepancies, Bennett angles, and maximum opening (<i>p</i> < 0.05). TMD symptoms were associated with higher absolute CO-MI discrepancies but did not significantly alter other kinematic parameters. Weak correlations were found between sagittal condylar guidance and anterior guidance variables. <b>Conclusions</b>: Mandibular kinematics differ by skeletal classification, with Class III patients demonstrating distinct patterns. While TMD symptoms impact CO-MI discrepancies, overall mandibular dynamics remain consistent.</p>","PeriodicalId":11269,"journal":{"name":"Dentistry Journal","volume":"13 5","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12110127/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144149608","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"True Allergies to Articaine: A 25-Year Analysis.","authors":"Frank Halling, Andreas Neff, Axel Meisgeier","doi":"10.3390/dj13050180","DOIUrl":"10.3390/dj13050180","url":null,"abstract":"<p><p><b>Background</b>: Although allergic reactions to amide local anesthetics (LA) are rare, it is important for medical professionals to be aware of their potential occurrence. Despite the fact that articaine is one of the most commonly used LA in dentistry, a survey of documented cases of allergies to articaine is absent from the literature. The objective of this review was to ascertain how often true allergies to articaine, verified by standard allergological procedures, have been reported over the last 25 years. <b>Methods</b>: A comprehensive review of the literature from 1 January 2000 to 31 December 2024 was conducted using the PubMed-MEDLINE database. The search was limited to articles investigating suspected allergy to articaine. The search strategy encompassed indexing terms, keywords, and free-text words, complemented by an extensive manual search. The final determination was based on the application of skin and/or challenge tests as the gold standard for identifying articaine as the causative agent. <b>Results</b>: During the investigation period, 10 case reports and six case series, encompassing 29 patients with a confirmed true allergy to articaine, were identified. The age of the patients ranged from 8 to 65 years, with a median age of 34 years. Of these patients, 20 were diagnosed with an immediate type I allergy, while 5 patients exhibited a delayed type IV allergy. In four cases the specific type of allergy was not mentioned. In the majority of cases an intradermal test (IDT) was employed to ascertain the specific type of allergy. Cross-reactivity with other amide LA was reported in three cases. <b>Conclusions</b>: True allergies to articaine are exceedingly rare. Investigation strategies should include a combination of a thorough clinical history and a standardized allergological procedure entailing skin tests and challenge. Only a comprehensive approach ensures the accurate identification of affected patients and facilitates the selection of a tolerated LA.</p>","PeriodicalId":11269,"journal":{"name":"Dentistry Journal","volume":"13 5","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12110218/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144149195","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Outcome of Old-School Indirect Pulp Capping over 40 Years: A Practice-Based Retrospective Evaluation.","authors":"Roland Frankenberger, Andreas Koch, Lina Plohmann, Benedicta Beck-Broichsitter, Stephan Becker","doi":"10.3390/dj13050182","DOIUrl":"10.3390/dj13050182","url":null,"abstract":"<p><p>(1) <b>Background:</b> The aim of this in vitro study was to evaluate the success of indirect pulp capping (IPC) procedures over a period of 40 years. (2) <b>Methods:</b> The investigation of 1412 dental records included 159 patients with 366 IPC teeth having been treated from 1969 to 1980. The teeth revealed caries within the inner third of dentin, were symptom-free, and showed no pulp exposure. The caries were excavated thoroughly and teeth with accidentally exposed pulp were excluded. Zinc-oxide-eugenol was used for the IPC procedures. The posterior teeth were restored with amalgam, and the anterior teeth received direct resin composite fillings. The gathered parameters with possible influences on survival rates were age, gender, tooth locations/positions, dates of vital therapy, the number of filled surfaces, types of primary restoration material, successional treatments on each tooth, and the last dates of surveillance. Data collection and statistical analysis were performed using Excel sheets and DataTab. Significant differences among groups were computed by cox regression analysis and the significance level was set at <i>p</i> = 0.05. Kaplan-Meier curves were utilized to illustrate the survival rates. (3) <b>Results:</b> Treatment success was measured by the maintenance of vitality beyond 365 days. The loss of vitality within 365 days was determined as treatment failure. Treatment outcomes were assessed after different time periods (1 and 6 months; 1, 2, 5, 10, 20, and 40 years). Pulp vitality dropped from 95% after 3 months to 32% after 40 years. Cavity size had a significant influence on the survival of pulp, but tooth position did not; however, third molars at least initially showed a better outcome. Beyond the 1-year recall, no differences for the evaluated parameters were present. (4) <b>Conclusions:</b> IPC showed excellent long-term success rates, revealing a 1.7% annual failure rate after 40 years of clinical service. Larger defects suffer more pulp damage in the long run.</p>","PeriodicalId":11269,"journal":{"name":"Dentistry Journal","volume":"13 5","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12109685/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144149239","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Effect of Low-Level Laser Therapy to Reduce Pain Caused by Orthodontic Separators: A Randomized, Double-Blind Placebo-Controlled, Split-Mouth Study.","authors":"Alireza Khandan Dezfully, Márió Gajdács, Aliz Eperke Pató, Krisztina Kárpáti, Melinda Madléna","doi":"10.3390/dj13050181","DOIUrl":"10.3390/dj13050181","url":null,"abstract":"<p><p><b>Background:</b> During the initiation of routine orthodontic treatment with fixed appliances, placing elastic separators (ESs) may lead to the patient experiencing considerable pain. Earlier studies evaluating the effects of low-level laser therapy (LLLT) on reducing pain caused by orthodontic ESs have reported contradictory results. The aim of our study was to evaluate the effect of a single application of LLLT on the experience of pain following ES placement. <b>Methods:</b> A double-blind, placebo-controlled randomized controlled trial was performed-with implementation of the split-mouth technique-where <i>n</i> = 33 volunteers (12 male and 21 female; aged between 19 and 36 years) were enrolled. ESs were placed at the mesial and distal surfaces of the first permanent molars in the upper or lower jaws. Jaws were divided into two quadrants; the treatment group received LLLT (using a GaAlAs diode laser, at a 980 nm wavelength, with 100 mW producing 6 J of energy; continuous wave), while the other quadrant served as the placebo side receiving a similar treatment, but without laser irradiation, immediately after separation. A questionnaire with a visual analogue scale (VAS; 0-100) was used for the assessment of pain (spontaneous pain and pain on mastication) scored for each first permanent molar directly after separation and after 6, 24, 48 and 72 h of both laser and placebo treatment application. <b>Results:</b> Mean VAS values were lower, but not significantly different, between the treatment vs. placebo groups for spontaneous pain at either measurement point (<i>p</i> > 0.05). Mean VAS values were significantly lower in the treatment groups for pain on mastication at the 6 (9.29 ± 12.65 vs. 19.07 ± 20.99; <i>p</i> = 0.025), 24 (21.96 ± 21.11 vs. 37.19 ± 26.35; <i>p</i> = 0.012) and 48 h (28.01 ± 21.40 vs. 42.60 ± 26.29; <i>p</i> = 0.016) measurement points. The analgetic effect of LLLT was most effective after 6 h, both in the resting position (-49% decrease) and during mastication (-51% decrease). <b>Conclusions:</b> A single application of LLLT with 6 J of energy may have beneficial effects on reducing the pain caused by orthodontic ESs used at the initiation of treatment with fixed appliances, especially during mastication, after 6-48 h following the separation procedure. <b>Trial registration:</b> clinicaltrials.gov ID NCT06816537 (date of registration: 7 February 2025, retrospectively registered).</p>","PeriodicalId":11269,"journal":{"name":"Dentistry Journal","volume":"13 5","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12110088/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144149701","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Biomaterials for Guided Tissue Regeneration and Guided Bone Regeneration: A Review.","authors":"Nathália Dantas Duarte, Paula Buzo Frigério, Gloria Estefania Amaya Chica, Roberta Okamoto, Rogério Leone Buchaim, Daniela Vieira Buchaim, Michel Reis Messora, João Paulo Mardegan Issa","doi":"10.3390/dj13040179","DOIUrl":"https://doi.org/10.3390/dj13040179","url":null,"abstract":"<p><p>This review aims to provide an overview of the types of membranes, bone substitutes, and mucosal substitutes used for GTR and GBR and briefly explores recent innovations for tissue regeneration and their future perspectives. Since this is a narrative review, no systematic search, meta-analysis, or statistical analysis was conducted. Using biomaterials for GTR and GBR provides a reduction in postoperative morbidity, as it contributes to less invasive clinical procedures, serving as an alternative to autogenous grafts. Moreover, randomized clinical trials (RCTs) and systematic reviews are essential for the evaluation of new biomaterials. These studies provide more robust evidence and help guide clinical practice in the selection of safer and more effective biomaterials, allowing for the personalization of treatment protocols for each patient.</p>","PeriodicalId":11269,"journal":{"name":"Dentistry Journal","volume":"13 4","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12026320/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143991552","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of Vitamin D, Melatonin, and Omega-3 Fatty Acids on Periodontal Health: A Narrative Review.","authors":"Dora Dragičević Tomičić, Nikolina Lešić, Ivana Škrlec, Larissa Steigmann, Kristina Tseneva, Martina Čalušić Šarac, Tin Crnić, Igor Tomičić, Željka Perić Kačarević, Marija Čandrlić","doi":"10.3390/dj13040178","DOIUrl":"https://doi.org/10.3390/dj13040178","url":null,"abstract":"<p><p>Periodontitis is a chronic inflammatory disease characterized by the destruction of tooth-supporting structures, influenced by immune system dysregulation, oxidative stress, and imbalances in bone metabolism. Given its multifactorial pathogenesis, bioactive compounds such as vitamin D, melatonin, and omega-3 fatty acids have emerged as potential adjuncts to periodontal therapy due to their immunomodulatory, anti-inflammatory, and antioxidative properties. This narrative review explores the role of these three supplements in periodontal health, their potential in synergistic effects, and existing research gaps, providing a foundation for future studies on their clinical applications. Vitamin D is essential for calcium homeostasis, bone remodeling, and immune function. It modulates both innate and adaptive immune responses, enhancing antimicrobial peptide production and reducing inflammatory cytokine expression. Omega-3 fatty acids reduce the production of pro-inflammatory eicosanoids while promoting the synthesis of pro-resolving lipid mediators, contributing to bone preservation and immune balance. Melatonin, known for its antioxidant and osteogenic properties, supports bone remodeling by stimulating osteoblast proliferation and inhibiting osteoclast activity, while also regulating circadian rhythms, which may influence oral health. Although these bioactive compounds show promising effects in preclinical and clinical studies, significant knowledge gaps remain regarding optimal dosages, long-term efficacy, combined use, and standardized treatment protocols. Further clinical trials are necessary to elucidate their therapeutic value in periodontal disease management, especially those focused on their potential synergistic mechanisms. Understanding their synergistic mechanisms may open new avenues for adjunctive strategies in periodontal therapy.</p>","PeriodicalId":11269,"journal":{"name":"Dentistry Journal","volume":"13 4","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12026395/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143985199","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of a Recombinant Human Basic Fibroblast Growth Factor 2 (rhFGF-2)-Impregnated Atelocollagen Sponge on Vertical Guided Bone Regeneration in a Rat Calvarial Model.","authors":"Keisuke Kogure, Akira Hasuike, Risa Kurachi, Yasuyuki Igarashi, Masataka Idesawa, Shuichi Sato","doi":"10.3390/dj13040177","DOIUrl":"https://doi.org/10.3390/dj13040177","url":null,"abstract":"<p><p><b>Background/Objectives</b>: Achieving a sufficient volume of augmented bone, particularly for vertical bone regeneration, remains challenging. This study investigated the use of basic fibroblast growth factor 2 (FGF-2) to promote bone augmentation beyond the skeletal envelope in the rat calvarium. <b>Methods</b>: Seven rats were included in the study, with bilateral experimental sites in the calvarium. Two plastic caps were placed in the calvarium, containing either 0.3% FGF-2 with an atelocollagen sponge or an atelocollagen sponge alone as a control. Bone augmentation within the plastic caps was evaluated using micro-computed tomography (micro-CT) scans and histological sections. Micro-CT measurements, including bone volume measurements, were obtained at 1 week to 12 weeks after surgery. At 12 weeks, the area and height of the newly formed bone were evaluated using histological sections. <b>Results</b>: Starting at 8 weeks after surgery, the volume of the newly formed bone in the 0.3% FGF-2 group was significantly greater than that in the control group. At 12 weeks, histomorphometric analyses revealed that the area and height of the newly augmented bone were 35.6% and 41.9%, respectively, in the FGF-2 group, compared with 9.1% and 13.4%, respectively, in the control group. <b>Conclusions</b>: The inclusion of 0.3% FGF-2 in atelocollagen sponge enhanced vertical bone augmentation beyond the skeletal envelope in the rat calvarium. These findings have potential applications for improving bone regeneration outcomes in dental implant procedures.</p>","PeriodicalId":11269,"journal":{"name":"Dentistry Journal","volume":"13 4","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12026401/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143991554","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mandibular Asymmetry Index and Dental Occlusion in Patients with Temporomandibular Disorders Treated with Occlusal Splint.","authors":"Sergio Paduano, Raffaella Grimaldi, Ludovica Nucci, Mario Fordellone, Rossana P Rotolo, Vincenzo Grassia, Fabrizia d'Apuzzo","doi":"10.3390/dj13040176","DOIUrl":"https://doi.org/10.3390/dj13040176","url":null,"abstract":"<p><p><b>Objectives:</b> To evaluate any changes in condylar and mandibular ramus height and dental malocclusion in adult patients with temporomandibular disorders (TMDs) diagnosed with DC/TMD criteria after treatment with an upper occlusal splint. <b>Methods:</b> This retrospective observational study included 48 adult patients with TMDs treated with an occlusal splint in the upper arch for about 12 months. For each patient, panoramic dental X-rays were analyzed using the Habets method to calculate the asymmetry index between the condyles and mandibular branches before and after treatment. The digital dental models were also studied at T0 and T1 to define the occlusal sagittal molar relationship and the posterior dental crossbite. The statistical analysis was performed using the Shapiro-Wilk normality tests, Student <i>t</i>-tests, or Wilcoxon tests using the R studio software (released version 4.3.3). <b>Results:</b> Condylar height showed a statistically significant difference (<i>p</i> = 0.022) and reduced condylar asymmetry between T0 and T1. The measurement of the condylar branch showed a statistical significance (<i>p</i> = 0.037), revealing an improvement of the mandibular symmetry in the vertical direction after treatment. Moreover, at T0, posterior dental crossbite was found in 37.5% of patients, specifically, bilateral in 12.5%, while unilateral crossbite in 22.9% on the right and 2.1% on the left side, and Class I malocclusion was found in the main part of the sample (72.9%). <b>Conclusions</b>: Patients with TMDs diagnosed according to DC/TMD and treated with an upper stabilization occlusal splint in the case of symptoms of masticatory muscle dysfunction showed a symmetrization in the mandibular ramus and condyle pre- and post-treatment (T0-T1). At the same time, no clinical differences were found in the occlusal characteristics.</p>","PeriodicalId":11269,"journal":{"name":"Dentistry Journal","volume":"13 4","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12025959/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143969553","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Micro-Computed Tomography Analysis of Reciprocating Systems in Three-Dimensional Models of Mandibular Premolars with Two Canals.","authors":"María Medina-Gil, Ana Martín-Díaz, Natalia Navarrete, José Aranguren, P S Ortolani-Seltenerich, Giulia Malvicini, Gaya C S Vieira, Alejandro R Pérez","doi":"10.3390/dj13040175","DOIUrl":"https://doi.org/10.3390/dj13040175","url":null,"abstract":"<p><p><b>Objective:</b> This study investigated the shaping efficiency of four reciprocating systems-WaveOne Gold, Reciproc Blue, Excalibur, and One Reci-in three dimensional (3D) resin models of natural mandibular premolar teeth with two canals. <b>Methods:</b> Forty 3D-printed mandibular premolars (Vertucci configuration type V) were divided into four groups, each of which was assigned one of the reciprocating systems. According to the manufacturer's protocols, each canal was prepared, with pre- and post-instrumentation micro computed tomography (micro-CT) scans evaluating canal volume, surface area, percentage of unprepared canal walls, and resin reduction in the pericervical area. Instrumentation time and screw-in sensation were recorded as qualitative performance indicators. Statistical analysis was performed using one-way ANOVA and chi-square tests with a significance of (<i>p</i> < 0.05). <b>Results:</b> All systems increased canal volume and surface area, primarily in the apical third, with Reciproc Blue and One Reci achieving the largest volume. WaveOne Gold had the highest percentage of unprepared walls (27.03%) and Reciproc Blue the lowest (19.65%), though these differences were not statistically significant (<i>p</i> > 0.05). Reciproc Blue caused the highest pericervical resin loss (22.24%), significantly higher than Excalibur (15.09%) and One Reci (15.17%) (<i>p</i> = 0.035). Reciproc Blue exhibited the highest incidence of screw-in sensation (70%), while WaveOne Gold achieved the shortest instrumentation time (86.7 s), although neither variable showed statistical significance. <b>Conclusions:</b> All systems effectively shaped complex canal anatomies, with Reciproc Blue demonstrating the highest dentin removal and WaveOne Gold proving the most time efficient. Clinically, these findings suggest that instrument selection should balance shaping efficiency with dentin preservation. Minimizing unprepared areas and preserving pericervical dentin are essential for enhancing disinfection and reducing the risk of root fractures, ultimately contributing to the long-term success of endodontic treatment.</p>","PeriodicalId":11269,"journal":{"name":"Dentistry Journal","volume":"13 4","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12026014/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143971039","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}