Journal of Prosthodontics-Implant Esthetic and Reconstructive Dentistry最新文献

{"title":"Case reports of oral appliance therapy on three young adults with Down syndrome and OSA.","authors":"Jingjing Zhang, Yuuya Kohzuka, Kathleen M Bennett, Fernanda R Almeida","doi":"10.1111/jopr.13997","DOIUrl":"https://doi.org/10.1111/jopr.13997","url":null,"abstract":"<p><p>Patients with Down syndrome (DS) have a high incidence of obstructive sleep apnea (OSA) due to hypotonia, weight, underdeveloped midface, and relative macroglossia. This article presents three cases of young adults with DS, who were diagnosed with mild to severe OSA and unable to tolerate positive airway pressure therapy. These patients have been successfully treated with a custom-made mandibular advancement device (MAD) or dual treatment with MAD and bi-level positive airway pressure (PAP) therapy. The baseline apnea-hypopnea index (AHI) of the three patients were 15.5/h, 31.8/h, and 41.3/h. The follow-up AHI after the application of MAD in three patients was 25/h (13 months after), 6/h (ODI 4%, 57 months after), and 21.8/h (21 months after), respectively. The application of MAD to treat OSA in patients with DS is a reasonable alternative when patients refuse PAP therapy. Although MAD might be less effective than PAP therapy, significant symptomatic improvement could be found in patients with DS after oral appliance therapy. The combination of MAD and PAP can decrease the PAP pressure and therefore improve adherence. This is the first case report to show that young adult patients with DS can successfully benefit from oral appliance therapy for OSA treatment.</p>","PeriodicalId":49152,"journal":{"name":"Journal of Prosthodontics-Implant Esthetic and Reconstructive Dentistry","volume":" ","pages":""},"PeriodicalIF":3.4,"publicationDate":"2024-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142781577","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 clinical comparative analysis using an optical tracking device versus conventional tracking device in the production of occlusal appliances.","authors":"Chan W Cheong, Kyle Radomski, James Otten, Sang J Lee","doi":"10.1111/jopr.13989","DOIUrl":"https://doi.org/10.1111/jopr.13989","url":null,"abstract":"&lt;p&gt;&lt;strong&gt;Purpose: &lt;/strong&gt;Optical tracking devices (OTDs) hold promise for enhancing patient-centered prostheses, but their efficacy remains underexplored. This clinical study aimed to comprehensively evaluate differences in static and dynamic occlusions among occlusal appliances fabricated using optical tracking, conventional tracking, and average articulator values (AAVs), providing insights into their efficacy in clinical and research-based practices.&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Materials and methods: &lt;/strong&gt;Twelve dentate participants aged over 25 years, with Angle Class I and II occlusal relationships, were enrolled. Occlusal appliances were fabricated by different condylar guidance values obtained by the three systems. The condylar guidance values were measured by an OTD via MODJAW, a conventional tracking device (CTD) via Cadiax compact 2, and the AAV with Bennett angle 10°, immediate mandibular lateral translation 0.5 mm, and sagittal condylar inclination (SCI) 35°. Occlusal appliances were designed using computer-aided design (CAD) software with the measured condylar guidance values from three systems. Subsequently, standard tessellation language (STL) files were transferred to computer-aided manufacturing (CAM) software for 3D printing with photopolymer resin. Each participant received three occlusal appliances fabricated using the three different systems. The accuracy of the systems was evaluated by accessing the clinical outcomes of the occlusal appliances. After placement, the number of contact points in maximal intercuspation position (MIP) and dynamic occlusion interferences were recorded, along with any discrepancies between designed and recorded contact points. Any anterior open bites at MIP with the appliance in place were measured from the maxillary incisal edge to the mandibular incisal edge. Statistical analysis included Kruskal-Wallis one-way analysis of variance (ANOVA) and Mann-Whitney tests with Bonferroni correction for pairwise comparisons (α = 0.05).&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Results: &lt;/strong&gt;In assessing static occlusion, significant differences were found in contact point discrepancies at MIP. OTD exhibited the lowest mean discrepancy of contact points compared with the original design (1.833 ± 0.312), followed by CTD (4.083 ± 0.758) and AAV (4.833 ± 1.389), with a statistical significance (p = 0.047). At the final protrusive position, OTD (0.400 ± 0.204) and CTD (1.400 ± 0.438) methods showed significantly lower discrepancies compared with AAV (3.583 ± 0.352) (p &lt; 0.001). Additionally, the OTD method demonstrated a statistically significant reduction in anterior open bite at MIP (0.115 ± 0.044 mm) compared with AAV (0.617 ± 0.246 mm) (p = 0.049). In dynamic occlusion, OTD showed no interferences in all subjects during protrusive movement, significantly outperforming both CTD (0.917 ± 0.474) and AAV (0.417 ± 0.202) (p = 0.033). No significant differences were observed among the methods for working and nonworking side laterotrusive movem","PeriodicalId":49152,"journal":{"name":"Journal of Prosthodontics-Implant Esthetic and Reconstructive Dentistry","volume":" ","pages":""},"PeriodicalIF":3.4,"publicationDate":"2024-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142781575","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":"Comparative analysis of smartphone colorimeter apps and spectrophotometry for measuring forehead skin color in maxillofacial prosthesis fabrication.","authors":"Somayeh Niakan, Mahdi Safi, Shima Younespour, Shayan Khoshtarkib","doi":"10.1111/jopr.13970","DOIUrl":"https://doi.org/10.1111/jopr.13970","url":null,"abstract":"<p><strong>Purpose: </strong>This study aimed to evaluate the accuracy and precision of two smartphone colorimeter apps, Color Grab, and Color Picker, in measuring forehead skin color and to compare their readings with those from a spectrophotometer.</p><p><strong>Materials and methods: </strong>Fifty participants (26 males, 24 females; median age 23 years, range 21-45) were included. Using a smartphone camera, images of forehead skin were captured, and CIELAB color values were reported by both apps. Measurements from a reference spectrophotometer (MiniScan EZ 4500L, 45°/0° geometry) served as the gold standard. Trueness and precision were assessed using CIELAB and CIEDE2000 formulas. Statistical analyses included one-way ANOVA and Mann-Whitney tests, with significance at p < 0.05.</p><p><strong>Results: </strong>Both apps showed comparable accuracy in capturing skin color, with absolute trueness (ΔE_Abs) for Color Grab at 7.59 (CIEDE2000) and Color Picker at 7.65. Relative trueness (ΔE_Rel) was 3.79 for Color Grab and 3.70 for Color Picker. Precision (MCDM) demonstrated significant differences between the apps: Color Grab at 1.34 (CIEDE2000) compared to Color Picker at 0.96 (p < 0.0001).</p><p><strong>Conclusion: </strong>While smartphone apps may not match the accuracy of spectrophotometers, they offer valuable alternatives for color matching in maxillofacial prostheses. Future studies should focus on minimizing systematic errors related to environmental factors and camera settings to enhance measurement accuracy.</p>","PeriodicalId":49152,"journal":{"name":"Journal of Prosthodontics-Implant Esthetic and Reconstructive Dentistry","volume":" ","pages":""},"PeriodicalIF":3.4,"publicationDate":"2024-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142773995","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 different 3Y-TZP nanoparticle concentrations on reinforcing mechanical properties of 3D-printed resin using stereolithography technology.","authors":"Keyu Qi, Tamaki Hada, Xiangyu Ren, Maiko Iwaki, Shunsuke Minakuchi, Manabu Kanazawa","doi":"10.1111/jopr.13995","DOIUrl":"https://doi.org/10.1111/jopr.13995","url":null,"abstract":"<p><strong>Purpose: </strong>To evaluate the impact of varying concentrations of 3 mol% yttria-stabilized tetragonal zirconia polycrystalline ceramic (3Y-TZP) nanoparticles on mechanical properties of three-dimensional (3D)-printed resins in stereolithography (SLA) technology.</p><p><strong>Materials and methods: </strong>A total of four groups (n = 6) of specimens were printed. Pure 3D-printed resin was used as the control group (0 wt%). For the experimental groups, modified 3Y-TZP nanoparticles were dispersed into 3D-printed resin at 1, 3, and 5 wt% concentrations to fabricate nanocomposites. Mechanical tests, including degree of conversion (DC), flexural strength, flexural modulus, fractography, and hardness, were evaluated and analyzed by one-way analysis of variance followed by the Games-Howell post-hoc test or Tukey post-hoc test (α = 0.05).</p><p><strong>Results: </strong>The DC of the control group showed the lowest value (p < 0.0001). The DC values peaked at the 5 wt% group, with no significant difference between the 3 wt% group. The flexural strength and modulus of the experimental groups were significantly higher than those in the control group. The addition of 1 and 3 wt% 3Y-TZP nanoparticles significantly improved the flexural strength and modulus (p < 0.05), while 5 wt% resulted in a significant decrease. The 1 wt% group showed the lowest hardness value. Maximum hardness value was observed in the 3 wt% group (p < 0.05). No significant difference was observed between the control and 5 wt% groups (p = 0.428).</p><p><strong>Conclusion: </strong>Optimal mechanical properties were obtained with the 3 wt% group, indicating its potential as a dental material in clinical application.</p>","PeriodicalId":49152,"journal":{"name":"Journal of Prosthodontics-Implant Esthetic and Reconstructive Dentistry","volume":" ","pages":""},"PeriodicalIF":3.4,"publicationDate":"2024-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142752069","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":"Impact of aging on the fracture strength of 3D-printed fixed implant prostheses: A comparative analysis of monolithic and bi-layer with or without fiber-reinforced composite frameworks.","authors":"Renata Moreira Cançado, Adilson Sakuno, Franciele Floriani, Amirali Zandinejad, Cintia Helena Coury Saraceni, Elcio Magdalena Giovani, Alfredo Mikail Melo Mesquita","doi":"10.1111/jopr.13988","DOIUrl":"https://doi.org/10.1111/jopr.13988","url":null,"abstract":"<p><strong>Purpose: </strong>This study aims to evaluate the fracture strength of three-unit, implant-supported fixed dental prostheses (FDPs) constructed from 3D-printed resin. It compares structures with and without fiber-reinforced composite (FRC) frameworks under conditions that mimic artificial aging.</p><p><strong>Materials and methods: </strong>Forty FDPs were fabricated and divided into two groups: monolithic (n = 20) and bi-layer (n = 20). The monolithic group (MG) consisted entirely of FDPs made from 3D-printed resin for permanent restorations, while the bi-layer group (BG) featured FDPs with an FRC framework veneered with the same 3D-printed resin. Each group was subdivided into two subgroups: one subjected to artificial aging (MTG, n = 10; BTG, n = 10), and the other served as the baseline control (n = 10). All subgroups underwent a mechanical bending test, applying a single load to failure using a universal testing machine.</p><p><strong>Results: </strong>There was a statistically significant difference in fracture strength due to the presence of the FRC framework (p < 0.01). The framework became the FDP more resistant to load. The mean load to failure and standard deviations were as follows: MG 406.59N (±33.84), MTG 286.20N (±152.15), BG 1142N (±162.88), and BTG 945N (±211.52). Although no statistical differences in strength were observed between aged and nonaged subgroups, variations in failure patterns emerged, with the BG and BTG groups showing a predominance of failures compared to the MG.</p><p><strong>Conclusions: </strong>The inclusion of an FRC framework significantly enhanced the fracture strength of the FDPs. While the aging protocol did not alter the strength, failures predominantly occurred in the 3D-printed resin superstructure at the connectors. The highest rate of fractures occurred in the premolar connector.</p>","PeriodicalId":49152,"journal":{"name":"Journal of Prosthodontics-Implant Esthetic and Reconstructive Dentistry","volume":" ","pages":""},"PeriodicalIF":3.4,"publicationDate":"2024-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142752073","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 daily immersion of different beverages on the surface roughness and color stability of 3D-printed denture base resins.","authors":"Mohammed M Gad, Hassan Alramadan, Mohammed Alkoudemi, Hussain Aljubran, Raand Altayyar, Deena Alghamdi, Nadim Z Baba, Soban Q Khan, Reem Abualsaud, Ahmed Fathey Elhagali, Fahad A Al-Harbi","doi":"10.1111/jopr.13993","DOIUrl":"https://doi.org/10.1111/jopr.13993","url":null,"abstract":"<p><strong>Purpose: </strong>To measure the effect of daily immersion in varying beverages (distilled water, tea, carbonated beverage, and orange juice) on surface roughness and color stability of 3D-printed denture base resins.</p><p><strong>Materials and methods: </strong>160 acrylic resin discs (15 × 2.5 mm) were made from heat-polymerized (HP), and 3D-printed resins (FormLabs, ASIGA, and NextDent). Resin discs (N = 40) were immersed in different solutions (distilled water, tea, carbonated beverage, or orange juice; (n = 10/group)). Surface roughness (R_a, µm) was measured initially (T₀), 6 months post immersion (T₁), and 12 months post immersion (T₂) using a non-contact profilometer. Color change (∆E₀₀) was calculated using CIEL2000 at T₁ and T₂ using a spectrophotometer. The data were analyzed using Mann-Whitney U test and Kruskal-Wallis test in addition to general linear modeling (α = 0.05).</p><p><strong>Results: </strong>Significant differences in surface roughness (R_a) were found between the baseline and immersion in distilled water, carbonated beverage, and orange juice (p < 0.05). HP resin showed increased roughness with all immersion solutions compared to T₀ with the highest value seen at T₁ with tea. ASIGA resin had the highest mean R_a of 1.78 (0.43) after carbonated beverage immersion, while FormLabs resin had the lowest mean R_a of 0.88 (0.06) after distilled water immersion. Tea immersion did not significantly affect R_a among the resins (p > 0.05). Noticeable color changes were observed after immersion in tea, carbonated beverage, and orange juice. All resins exceeded perceptibility and acceptability thresholds at T₁ and T₂. The combined effect of time and resin on color change was statistically significant (p < 0.001), while the combined effects of time/immersion solution, immersion solution/resin, and immersion solution/resin/time were not.</p><p><strong>Conclusion: </strong>Carbonated beverage, tea, and orange juice increase the surface roughness of 3D-printed resins. Tea, carbonated beverage, and orange juice resulted in noticeable color changes of HP and 3D-printed denture base resins and this change was time-dependent.</p>","PeriodicalId":49152,"journal":{"name":"Journal of Prosthodontics-Implant Esthetic and Reconstructive Dentistry","volume":" ","pages":""},"PeriodicalIF":3.4,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142717518","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":"Flexural strength, surface roughness, and color stability of various CAD-CAM denture teeth materials.","authors":"Ahmet Orgev, Gulce Cakmak, Chin-Chun Peng, Grigoris Lavrentiadis, Rui Li","doi":"10.1111/jopr.13987","DOIUrl":"https://doi.org/10.1111/jopr.13987","url":null,"abstract":"<p><strong>Purpose: </strong>To assess the flexural strength (FS), surface roughness, and color stability of additive manufactured (AM) and subtractive manufactured (SM) denture teeth materials, as well as the effect of thermocycling on these properties.</p><p><strong>Materials and methods: </strong>Eighty strips (20/material type; 64×10×3.3 mm) and 60 discs (15/material type; 12×4 mm) were fabricated from four different denture teeth materials (Straumann, Flexcera, Ivoclar, and Candulor). The specimens were divided into two subgroups (nonthermal cycled and 5000 thermal cycled,10 per subgroup), and subjected to a 3-point test for FS using a universal testing machine at a crosshead speed of 5.0 mm/min. Surface roughness (R_a, µm) and color differences (ΔE₀₀) of disc specimens were measured before and after thermocycling using a noncontact optical profilometer and a spectrophotometer, respectively. The CIEDE2000 formula was used to calculate the color differences (ΔE₀₀) before and after thermocycling. Data were analyzed using 2-way ANOVA followed by post hoc multiple comparison tests (α = 0.05).</p><p><strong>Results: </strong>There was no significant difference in flexural strength between nonthermal cycled SM materials (p = 0.15), which were significantly higher than AM materials (p < 0.001). The flexural strength values of all tested materials were significantly reduced after thermocycling (p < 0.05). The material type had a significant effect on the R_a values (p < 0.001), whereas thermocycling did not (p = 0.81). After thermocycling, all materials exhibited color changes lower than the clinical perceptible threshold (ΔE₀₀= 2.7).</p><p><strong>Conclusions: </strong>Thermocycling decreased the FS of denture teeth materials manufactured with AM and SM, but did not affect the surface roughness. The FS values of SM groups were significantly higher than AM materials, irrespective of thermocycling. No clinically significant color changes of the denture teeth material were noted.</p>","PeriodicalId":49152,"journal":{"name":"Journal of Prosthodontics-Implant Esthetic and Reconstructive Dentistry","volume":" ","pages":""},"PeriodicalIF":3.4,"publicationDate":"2024-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142692942","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 comparative study of strength and surface properties of permanent 3D-printed resins with CAD-CAM milled fixed dental prostheses.","authors":"Mohammed M Gad, Hoor A Al Mahfoudh, Fatimah A Al Mahfuth, Kouthar A Hashim, Soban Q Khan, Faisal D Al-Qarni, Nadim Z Baba, Fahad A Al-Harbi","doi":"10.1111/jopr.13990","DOIUrl":"https://doi.org/10.1111/jopr.13990","url":null,"abstract":"<p><strong>Purpose: </strong>To compare the strength, surface roughness, and hardness of newly introduced permanent three-dimensional (3D)-printed resin in comparison with computer-aided design and computer-aided manufacturing (CAD-CAM) milled materials.</p><p><strong>Materials and methods: </strong>Three 3D-printed resins (NextDent C&B, Formlabs Permanent Crown, and VarseoSmile Crown plus) and two CAD-CAM milled (IPS e.max ZirCAD LT and VITA Enamic) resins were used to fabricate discs specimens. A total of 200 disc specimens were fabricated according to manufacturer recommendations. Within each group, half of the specimens were subjected to thermal cycling (5°C-55°C, the 30 s, 5000 cycles). Aged and nonaged specimens were evaluated for biaxial flexural strength (BFS), surface roughness, and hardness. Results were statistically analyzed using analysis of variance (ANOVA) and t-tests (α = 0.05).</p><p><strong>Results: </strong>Significant differences (p < 0.05) were observed in the BFS, surface roughness, and hardness between the 3D-printed and milled groups, before and after thermal aging. Overall, the CAD-CAM milled ceramic group had superior strength, surface roughness, and hardness when compared to all other groups (p < 0.001), except for surface roughness after thermal aging, which was similar in all groups (p = 0.063). Within each group, there was no significant difference (p > 0.05) in surface roughness after thermal aging. BFS values of 3D-printed materials were statistically similar. In terms of surface roughness, Formlabs specimens displayed the highest value before and after thermal cycling, when compared to other 3D-printed materials. Regarding hardness, the VarseoSmile Crown plus group demonstrated the highest values compared to other 3D-printed materials, before and after thermal cycling.</p><p><strong>Conclusion: </strong>Permanent 3D-printed resins have lower strength than CAD-CAM milled materials. 3D-printed permanent resin materials exhibited high roughness and comparable hardness to CAD-CAM materials. Thermal aging negatively affected the properties of 3D-printed permanent crowns. Owing to the low strength of 3D-printed permanent resins, they may not be recommended for clinical practice until further improvements in flexural strength are made to meet clinical standards.</p>","PeriodicalId":49152,"journal":{"name":"Journal of Prosthodontics-Implant Esthetic and Reconstructive Dentistry","volume":" ","pages":""},"PeriodicalIF":3.4,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142683138","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":"Craniofacial anatomical determinants of pediatric sleep-disordered breathing: A comprehensive review.","authors":"Kyung-A Kim, Su-Jung Kim, Audrey Yoon","doi":"10.1111/jopr.13984","DOIUrl":"10.1111/jopr.13984","url":null,"abstract":"<p><strong>Purpose: </strong>This narrative review aims to elucidate the anatomical features of sleep-disordered breathing (SDB) in children. By identifying key structures and intervening proactively, we seek to alter craniofacial growth patterns and improve functional outcomes for SDB children.</p><p><strong>Methods: </strong>The literature on pediatric sleep-disordered breathing (PSDB), pediatric obstructive sleep apnea (OSA), anatomical predispositions, and the relationship between skeletal deformity and PSDB was examined using PubMed and Google Scholar databases, covering studies from 2006 to 2024.</p><p><strong>Results: </strong>Forty relevant articles were reviewed, focusing on craniofacial characteristics associated with PSDB. The etiology of PSDB is multifactorial, with adenoid and palatal tonsil enlargement being the most common cause. While adenotonsillectomy is recommended as the primary treatment, residual SDB may result in craniofacial skeletal deformities contributing to upper airway constriction. Typical craniofacial phenotypes of SDB include excessive vertical growth and constriction of the maxilla, a retruded mandible, and posterior rotation, known as a Class II hyperdivergent pattern. Conversely, Class III with an underdeveloped maxilla shows a relatively lower risk for SDB due to reduced nasal cavity and nasopharyngeal airway volumes. Transverse maxillary constriction with a high, deep palatal vault is a significant risk factor. Additionally, nasal obstruction and low tongue posture, with or without a short lingual frenulum, are identified as craniofacial risk factors for SDB development in children.</p><p><strong>Conclusion: </strong>Early diagnosis and intervention are critical in managing PSDB. Dentists, through screening and early treatment, can significantly influence craniofacial growth and health outcomes. A multidisciplinary approach is essential for effective management, improving the quality of life and long-term health of affected children.</p>","PeriodicalId":49152,"journal":{"name":"Journal of Prosthodontics-Implant Esthetic and Reconstructive Dentistry","volume":" ","pages":""},"PeriodicalIF":3.4,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142669277","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":"Comparative evaluation of human oral fibroblast proliferation on 3D-printed zirconia and silicon nitride as new ceramic materials for implant abutment.","authors":"Saumya Khurana, Yingzi Li, Matthew Kesterke, Xiaohua Liu, Amirali Zandinejad","doi":"10.1111/jopr.13986","DOIUrl":"10.1111/jopr.13986","url":null,"abstract":"<p><strong>Purpose: </strong>Cell adhesion and subsequent proliferation on material surfaces depend on the physical and chemical characteristics of the material. There is a lack of literature on human gingival fibroblast proliferation on comparatively newer additively manufactured materials like silicon nitride. This study focused on the physical characteristics of the materials with the aim to compare the adhesion and proliferation of human gingival fibroblasts on additively manufactured silicon nitride (AMSN) with additively manufactured zirconia, conventional milled titanium (MTi), and milled zirconia.</p><p><strong>Materials and methods: </strong>Surface roughness and water contact angle were measured by profilometer and goniometer, respectively. CCK-8 assay was done to assess the cell growth at 24 h (day 1), 48 h (day 2), and 72 h (day 3) in the same well. The morphologies of fibroblasts after cell attachment and proliferation were evaluated using scanning electron microscopy (SEM) after 72 h.</p><p><strong>Results: </strong>At the end of 24 h (day 1) additively manufactured zirconia showed the best proliferation among the experimental groups, which was around 50% of the positive control group proliferation. There was no statistically significant difference among the experimental groups. At 48 h (day 2) and 72 h (day 3), a loss of cell growth was seen in almost all the experimental group wells. A positive cell proliferation on the AMSN was observed on day 3.</p><p><strong>Conclusion: </strong>Comparable cell proliferation was observed in the experimental groups. No conclusive correlation could be drawn between cell proliferation and surface roughness and water contact angle values in the experimental groups.</p>","PeriodicalId":49152,"journal":{"name":"Journal of Prosthodontics-Implant Esthetic and Reconstructive Dentistry","volume":" ","pages":""},"PeriodicalIF":3.4,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142669276","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}