Journal of Prosthetic Dentistry最新文献

{"title":"Influence of postprinting cleaning methods on the cleaning efficiency and surface and mechanical properties of three-dimensionally printed resins","authors":"","doi":"10.1016/j.prosdent.2024.02.026","DOIUrl":"10.1016/j.prosdent.2024.02.026","url":null,"abstract":"<div><h3>Statement of problem</h3><div>The outcome of photopolymerized 3-dimensional (3D) printing is influenced by the methods used for postprinting cleaning, yet information on postprinting cleaning is sparse.</div></div><div><h3>Purpose</h3><div>The purpose of this in vitro study was to assess the cleaning efficiency and surface and mechanical properties of 3D printed resin according to postprinting cleaning methods.</div></div><div><h3>Material and methods</h3><div><span><span>Specimens were fabricated from a 3D model using </span>resin materials<span> (NextDent C&amp;B MFH and DIOnavi-P. MAX) and were tested for postprinting cleaning methods for 5 minutes with isopropyl alcohol<span>, isopropyl alcohol + ultrasonic, ethyl alcohol, ethyl alcohol + ultrasonic, and ultrasonic alone. Postpolymerization was followed for 5 minutes. The cleaning efficiency, microcomputed </span></span></span>tomography<span> (µCT), surface roughness<span><span>, Vickers hardness, and </span>flexural strength of the specimens were evaluated. The 1-way ANOVA test was performed after considering normality. A post hoc analysis with Bonferroni was also performed (α=.008 or.005).</span></span></div></div><div><h3>Results</h3><div>Ultrasonic in addition to cleaning solutions significantly improved the cleaning efficiency in NextDent C&amp;B MFH specimens (<em>P</em>&lt;.005), whereas ultrasonic did not affect the efficiency in DIOnavi-P. MAX specimens. No significant differences were found in surface roughness by postprinting cleaning methods in either NextDent C&amp;B MFH or DIOnavi-P. MAX (<em>P</em>&gt;.005). No significant changes in surface hardness were observed by postprinting cleaning methods (<em>P</em><span>&gt;.008). In the NextDent C&amp;B MFH, ethyl alcohol + ultrasonic significantly decreased the flexural strength (</span><em>P</em>&lt;.005). There were no significant differences in the flexural strength in the DIOnavi-P. MAX (<em>P</em>&gt;.005).</div></div><div><h3>Conclusions</h3><div>Ethyl alcohol was comparable with isopropyl alcohol for use as a postprinting cleaning solution for both NextDent C&amp;B MFH and DIOnavi-P. MAX. The addition of ultrasonic to cleaning solutions should be applied with caution. These findings suggest that different postprinting cleaning methods can be recommended depending on the 3D printed resin materials.</div></div>","PeriodicalId":16866,"journal":{"name":"Journal of Prosthetic Dentistry","volume":null,"pages":null},"PeriodicalIF":4.3,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140759613","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":"Validation of a shape-optimized 2-unit cantilevered inlay-retained fiber-reinforced resin-bonded dental prosthesis","authors":"","doi":"10.1016/j.prosdent.2022.06.017","DOIUrl":"10.1016/j.prosdent.2022.06.017","url":null,"abstract":"&lt;div&gt;&lt;h3&gt;Statement of problem&lt;/h3&gt;&lt;div&gt;&lt;span&gt;Current designs of fiber-reinforced composite (FRC) resin-bonded fixed dental prostheses (RBFDPs) have a limited lifespan, failing mainly through veneer-fiber &lt;/span&gt;delamination, debonding, and fracture.&lt;/div&gt;&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 validate a new inlay-retained 2-unit cantilevered RBFDP with an optimized cavity and fiber layout proposed in a previous study by using simulated occlusal loading.&lt;/div&gt;&lt;/div&gt;&lt;div&gt;&lt;h3&gt;Material and methods&lt;/h3&gt;&lt;div&gt;&lt;span&gt;&lt;span&gt;Two groups of specimens (n=20), 1 with and 1 without glass fibers&lt;span&gt;&lt;span&gt;, were used to test the influence of the cavity design and that of the fiber layout on their load capacity, respectively. The specimens without fibers were directly cut from a resin-ceramic block by using a computer-aided manufacturing system, while those with fibers were manually fabricated with unidirectional glass fibers and &lt;/span&gt;composite resin in a &lt;/span&gt;&lt;/span&gt;silicone&lt;span&gt; mold. The specimens with and without fibers were attached to abutments made of the same resin-ceramic with a cyanoacrylate-based adhesive and a resin-based &lt;/span&gt;&lt;/span&gt;dental cement&lt;span&gt;&lt;span&gt;, respectively. An increasing compressive load was applied on the mesial fossa&lt;span&gt; of the premolar pontic until failure. Cracking in the specimens during loading was monitored with a 2-channel &lt;/span&gt;&lt;/span&gt;acoustic emission (AE) system.&lt;/span&gt;&lt;/div&gt;&lt;/div&gt;&lt;div&gt;&lt;h3&gt;Results&lt;/h3&gt;&lt;div&gt;&lt;span&gt;All the specimens without fiber reinforcement debonded from the abutments. Those using the optimized shovel-shaped cavity design had a mean ±standard deviation failure load (50.0 ±17.3 N) that was 193% higher than that of those with the conventional step-box design (17.1 ±6.2 N; &lt;/span&gt;&lt;em&gt;P&lt;/em&gt;&lt;.001). No significant difference was found between the groups for the mean number of AE events per specimen (step-box: 49 ±34 versus shovel-shaped: 63 ±34; &lt;em&gt;P&lt;/em&gt;=.427), the mean amplitude of each event (58.4 ±1.3 dB versus 59.5 ±2.4 dB; &lt;em&gt;P&lt;/em&gt;&lt;span&gt;=.299), or the mean time to failure (283.2 ±122.3 seconds versus 297.5 ±66.7 seconds; &lt;/span&gt;&lt;em&gt;P&lt;/em&gt;=.798). Between the groups of specimens with reinforcing fibers, the mean failure load of the conventional design was approximately half that of the optimized one. Again, no significant difference was found for the mean number of AE events per specimen (conventional: 28 ±18 versus optimized: 52 ±53; &lt;em&gt;P&lt;/em&gt;=.248) or the mean amplitude for each AE event (64.9 ±4.2 dB versus 61.7 ±5.2 dB; &lt;em&gt;P&lt;/em&gt;=.187). The connectors of 8 fiber-reinforced specimens with the conventional design fractured; the other 2 debonded from the abutments. Half of the shape-optimized fiber-reinforced specimens had fractured abutments, but the cantilevers remained intact, 4 specimens fractured at the connector, and only 1 debonded from its abutment.&lt;/div&gt;&lt;/div&gt;&lt;div&gt;&lt;h3&gt;Conclusions&lt;/h3&gt;&lt;div&gt;The shape-optimized 2-unit cantilevered FRC RBFDP had a hi","PeriodicalId":16866,"journal":{"name":"Journal of Prosthetic Dentistry","volume":null,"pages":null},"PeriodicalIF":4.3,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10356099","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 sanitizing solutions on cobalt chromium alloys for dental prostheses: A systematic review of in vitro studies","authors":"","doi":"10.1016/j.prosdent.2022.09.013","DOIUrl":"10.1016/j.prosdent.2022.09.013","url":null,"abstract":"<div><h3>Statement of problem</h3><div><span>Given the wide use of cobalt chromium (Co-Cr) alloys, especially for removable partial dentures, and the importance of chemical solutions to complement the cleaning of </span>dental prostheses<span><span>, safe disinfection<span> products should be identified for the regular decontamination of Co-Cr </span></span>dental prostheses.</span></div></div><div><h3>Purpose</h3><div>The purpose of this systematic review<span> of in vitro studies was to determine the effects on the properties of Co-Cr dental alloys of the various chemical agents used to clean dental prostheses.</span></div></div><div><h3>Material and methods</h3><div>In vitro studies were included based on a literature search conducted in March 2022 in the Medline/PubMed, SCOPUS, Web of Science, Virtual Health Library, and Embase databases. Independent reviewers performed the search, selection, extraction, and analysis of the data. The review was performed based on the Preferred Reporting Items for Systematic Review and Meta-Analysis (PRISMA) guidelines. The quality of the included articles was evaluated by using parameters adapted from the Consolidated Standards of Reporting Trials (CONSORT) guidelines, and the risk of bias analysis was performed based on previous studies.</div></div><div><h3>Results</h3><div><span><span>Among the 15 included studies, the chemical agents evaluated were alkaline peroxides and hypochlorites, mouthwashes containing </span>cetylpyridinium chloride and </span>chlorhexidine<span>, diluted acids, and enzymes. Some peroxides produced increased ion release, surface roughness, and mass loss of the alloys. The hypochlorites were responsible for the greatest surface corrosion, yielding dark stains, rough regions, and depressions. Acetic and peracetic acids<span> and mouthwashes<span> containing chlorhexidine and cetylpyridinium did not produce significant changes in Co-Cr alloys. Most studies presented moderate risk of bias.</span></span></span></div></div><div><h3>Conclusions</h3><div>According to the included studies, mouth<span> rinses containing cetylpyridinium chloride or chlorhexidine and solutions with acetic and peracetic acid could be safely used to chemically sanitize Co-Cr prostheses. Alkaline peroxides should be used with caution, and alkaline hypochlorite solutions should be avoided.</span></div></div>","PeriodicalId":16866,"journal":{"name":"Journal of Prosthetic Dentistry","volume":null,"pages":null},"PeriodicalIF":4.3,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40458590","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":"Up to 10 years clinical performance of zirconia ceramic and metal-ceramic fixed partial dentures: A retrospective study","authors":"","doi":"10.1016/j.prosdent.2022.11.003","DOIUrl":"10.1016/j.prosdent.2022.11.003","url":null,"abstract":"<div><h3>Statement of problem</h3><div>Completely veneered zirconia ceramic (ZC) fixed partial dentures (FPDs) have been reported to have a higher incidence of ceramic chipping than the standard metal-ceramic FPDs. However, data from comparative long-term studies are sparse.</div></div><div><h3>Purpose</h3><div>The purpose of this retrospective study was to compare the long-term survival, chipping-free survival, and success of ceramic-veneered high noble metal alloy (HN), base metal alloy (cobalt-chromium alloy) (CC), and ZC FPDs and to isolate risk factors for the incidence of failure, veneer chipping, and overall complications.</div></div><div><h3>Material and methods</h3><div><span>Data from 289 study participants (58.7% women; mean age, 57.97 ±11.51 years) provided with a total of 400 FPDs comprising 197 (49.3%) HN FPDs, 121 (30.3%) CC FPDs, and 82 (20.5%) ZC FPDs fabricated from presintered 3 mol% yttria-stabilized zirconia (mean time of service, 6.85 ±3.25 years) were evaluated. Of these, 278 (69.5%) FPDs were provided by dentists and 122 (30.5%) by dental students. Five- and 10-year survival, chipping-free survival, and success rates were calculated using the Kaplan–Meier method and compared with the log-rank test. Risk factors were assessed using Cox regression analysis. The study was exploratory, so all </span><em>P</em> values were considered exploratory and descriptive.</div></div><div><h3>Results</h3><div>The 5- and 10-year survival rates were 94.7% and 77.8% for HN, 93.7% and 81.2% for CC, and 92.9% and 53.3% for ZC FPDs, respectively, indicating no clear difference in survival among the framework materials. The 5- and 10-year chipping-free rates were 94.1% and 82.8% for HN, 96.1% and 78.9% for CC, and 82.6% and 62.2% for ZC FPDs, respectively, indicating a difference between HN and ZC, and CC and ZC restorations. The 5- and 10-year success rates were 83.7% and 55.3% for HN, 86.5% and 51.4% for CC, and 68.9% and 30.2% for ZC FPDs, respectively, indicating a difference between HN and ZC, and CC and ZC restorations. The Cox regression model indicated framework material as an influencing risk factor for success, and this influence persisted when chipping was investigated. Compared with zirconia, the use of a metal alloy reduced the risk of chipping or the occurrence of complications by up to one-third.</div></div><div><h3>Conclusions</h3><div>All FPDs showed high 5-year survival rates and acceptable 10-year survival rates with no strong differences among the materials. Higher success and chipping-free rates were observed for both HN and CC restorations compared with ZC restorations. Metal frameworks had a lower risk for complications or veneer chipping than zirconia frameworks.</div></div>","PeriodicalId":16866,"journal":{"name":"Journal of Prosthetic Dentistry","volume":null,"pages":null},"PeriodicalIF":4.3,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40548130","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":"Ultraviolet C as a method of disinfecting medical silicone used in facial prostheses: An in vitro study – Part 2","authors":"","doi":"10.1016/j.prosdent.2024.01.005","DOIUrl":"10.1016/j.prosdent.2024.01.005","url":null,"abstract":"<div><h3>Statement of problem</h3><div>Disinfection<span> is an important factor in preserving facial prostheses and maintaining tissue health. However, whether disinfection with ultraviolet C is an effective disinfection method is unclear.</span></div></div><div><h3>Purpose</h3><div>The purpose of this in vitro study was to evaluate the effectiveness of irradiation with different exposure durations of an ultraviolet-C light-emitting diode in the disinfection of the silicone (A-588–1; Factor II) used in facial prostheses.</div></div><div><h3>Material and methods</h3><div>A total of 216 specimens were prepared, contaminated by multispecies biofilm, and divided into 9 groups (n=24) for different treatments: chlorhexidine<span><span> 0.12% (G CHG), ultraviolet-C light-emitting diode for 5 minutes (G UVC5), ultraviolet-C light-emitting diode for 10 minutes (G UVC10), ultraviolet-C light-emitting diode for 20 minutes (G UVC20), their respective untreated controls (Gcontrol CHG, Gcontrol UVC5, Gcontrol UVC10, Gcontrol UVC20), and dimethyl sulfoxide<span> (G DMSO) as the negative control. Cell viability was measured by using the methyl </span></span>tetrazolium salt<span> (MTT) method. Two statistical analyses were performed. First, a 2×3 ANOVA was carried out to compare the control groups (Gcontrol UVC5, Gcontrol UVC10, and Gcontrol UVC20) and the experimental groups of UV-C LED light with different exposure durations (G UVC5, G UVC10, and G UVC20). The second analysis was performed using generalized linear models to compare the optical density of the groups (G UVC5, G UVC10, G UVC20, G CHG, and G DMSO).</span></span></div></div><div><h3>Results</h3><div><span>Cell viability results demonstrated a microbial reduction after exposure to the ultraviolet-C light-emitting diode for 20 minutes (G UVC20) compared with untreated controls (</span><em>P</em>&lt;.05). The 5- and 10-minute exposures were statistically similar to their respective control groups (<em>P</em><span>&gt;.05). The 20 minutes exposure had the lowest average optical density value, being statistically different from the 5-minute exposure (</span><em>P</em><span>&lt;.05). A 20-minute exposure to the ultraviolet-C light-emitting diode (G UVC20) was similarly effective when compared with the standard disinfection treatment (G CHG) and dimethyl sulfoxide (G DMSO) (</span><em>P</em>&gt;.05).</div></div><div><h3>Conclusions</h3><div>Irradiation with an ultraviolet-C light-emitting diode for 20 minutes decreased the in vitro microbial cell viability on the medical silicone used in facial prostheses.</div></div>","PeriodicalId":16866,"journal":{"name":"Journal of Prosthetic Dentistry","volume":null,"pages":null},"PeriodicalIF":4.3,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139672073","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":"Double crown removable partial denture for a patient with ectodermal dysplasia: A clinical report after 31 years","authors":"","doi":"10.1016/j.prosdent.2024.04.034","DOIUrl":"10.1016/j.prosdent.2024.04.034","url":null,"abstract":"<div><div><span>This clinical report describes the prosthodontic management of a 5-year-old boy with </span>ectodermal dysplasia<span><span> who had been followed for 31 years. During the first 15 years, several interim removable overdentures were fabricated and modified according to his skeletal growth. At age 20, after the completion of jaw development, 4 endosseous </span>dental implants<span><span> were inserted in the mandible with a nerve repositioning procedure. After a 6-month healing period, maxillary and mandibular double crown </span>removable partial dentures<span> (RPDs) using a gold electroforming system were delivered. In the 16 years since delivery, the implants and abutment teeth have shown no pathologic signs. The double crown RPDs supported by implants and natural teeth were found to be an effective, long-term stable treatment option for this patient with hypodontia. The authors are unaware of a longer follow-up period of dental rehabilitation in a patient with ectodermal dysplasia providing satisfactory functional and esthetic results.</span></span></span></div></div>","PeriodicalId":16866,"journal":{"name":"Journal of Prosthetic Dentistry","volume":null,"pages":null},"PeriodicalIF":4.3,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141327560","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":"An up to thirty-year retrospective study on the success and survival of single unit and splinted implant-supported crowns in a dental school setting","authors":"","doi":"10.1016/j.prosdent.2024.05.036","DOIUrl":"10.1016/j.prosdent.2024.05.036","url":null,"abstract":"<div><h3>Statement of problem</h3><div>Studies investigating the survival of implant-supported crowns provided in a dental school setting are sparse.</div></div><div><h3>Purpose</h3><div>The purpose of this retrospective study was to evaluate the success and reasons for failure of single unit and splinted implant-supported crowns provided in a dental school.</div></div><div><h3>Material and methods</h3><div>Using the axiUm dental management software program and paper charts, all single unit and splinted implant-supported crowns provided between September 1989 and January 2020 were included for evaluation. Success, survival, and failure were recorded as well as reasons for failure. A Kaplan-Meier survival estimate with an associated <em>P</em> value, a life table analysis, and a log-rank test comparing the survival of single unit and splinted implant-supported crowns were performed.</div></div><div><h3>Results</h3><div><span>Over 30 years, 678 implant-supported crowns (586 single unit and 92 splinted) had been provided. Of these crowns, 17 (2.90%) single unit crowns and 5 (5.43%) splinted crowns failed, with most being prosthetic failures for both single units (64.7%) and splinted (80%), rather than biologic failures. A total of 371 single unit (63.3%) and 46 splinted (50.0%) implant crowns were a complete success, and 215 single unit (36.7%) and 46 splinted (50.0%) crowns survived but had some type of complication. The overall implant-supported crown survival rate was 96.8%. The survival distribution of the single unit and splinted implant-supported crowns was not statistically significantly different [χ2(2)=1.285, </span><em>P</em>=.257].</div></div><div><h3>Conclusions</h3><div>Both single unit and splinted implant-supported crowns had high success rates and showed similar survival rates. The most common causes of complications were also similar, with debonding and screw loosening of crowns being the most common complication for both single unit and splinted crowns.</div></div>","PeriodicalId":16866,"journal":{"name":"Journal of Prosthetic Dentistry","volume":null,"pages":null},"PeriodicalIF":4.3,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141537994","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":"Sponsoring Organizations and Liaisons","authors":"","doi":"10.1016/S0022-3913(24)00608-5","DOIUrl":"10.1016/S0022-3913(24)00608-5","url":null,"abstract":"","PeriodicalId":16866,"journal":{"name":"Journal of Prosthetic Dentistry","volume":null,"pages":null},"PeriodicalIF":4.3,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142358455","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":"Evaluation of the parameters related to the golden ratio in the teeth of individuals from different countries: A systematic review and meta-analysis","authors":"","doi":"10.1016/j.prosdent.2023.09.032","DOIUrl":"10.1016/j.prosdent.2023.09.032","url":null,"abstract":"<div><h3>Statement of problem</h3><div><span>Golden proportion, golden percentage, and recurring esthetic dental (RED) proportion are parameters used in </span>esthetic dentistry. However, a meta-analysis of studies evaluating these parameters in individuals from different countries is lacking.</div></div><div><h3>Purpose</h3><div>The purpose of this systematic review<span> and meta-analysis was to determine and compare the golden ratio, golden percentage, and RED ratio values as seen in the maxillary anterior teeth of individuals from different countries.</span></div></div><div><h3>Material and methods</h3><div>A systematic search was performed using PubMed/Medline, Google Scholar, and Web of Science to identify English and non-English language articles reporting the golden proportion, golden percentage, and RED proportion. The titles, full text, and abstracts were scanned by 2 investigators independently to identify articles that fulfilled the inclusion criteria. Using a meta-analysis software program, data extracted from each selected study were statistically combined using the random-effects model. Weighted mean differences, 95% confidence intervals, and heterogeneity were calculated for each measurement.</div></div><div><h3>Results</h3><div>The search protocol resulted in a total of 752 articles, but only 26 articles fulfilling the inclusion criteria were included in the meta-analysis. While the sample size varied between 46 and 384 in the 26 analyzed studies, a total of 3786 individuals from 12 countries were evaluated. No similarity was found using the esthetic parameters determined in the populations to which the meta-analysis was applied.</div></div><div><h3>Conclusions</h3><div>Mathematical formulas did not provide consistent results that would allow for their use as a standardized guide for creating natural looking smiles. Rather, dental esthetic ratios should be set based on the racial and ethnic character of a population.</div></div>","PeriodicalId":16866,"journal":{"name":"Journal of Prosthetic Dentistry","volume":null,"pages":null},"PeriodicalIF":4.3,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71482813","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":"Comparison of the positional accuracy of robotic guided dental implant placement with static guided and dynamic navigation systems: A systematic review and meta-analysis","authors":"","doi":"10.1016/j.prosdent.2024.02.015","DOIUrl":"10.1016/j.prosdent.2024.02.015","url":null,"abstract":"<div><h3>Statement of problem</h3><div>The development of robotic computer assisted implant surgery (r-CAIS) offers advantages, but how the positional accuracy of r-CAIS compares with other forms of guided implant surgery remains unclear.</div></div><div><h3>Purpose</h3><div><span>The purpose of this systematic review and meta-analysis was to evaluate the positional accuracy of r-CAIS and to compare the positional accuracy of r-CAIS with s-CAIS and </span><span>d</span>-CAIS.</div></div><div><h3>Material and methods</h3><div>Five databases were systematically searched by 2 independent reviewers for articles published before May 2023. A manual search was also performed. Articles evaluating the positional accuracy of r-CAIS were included. The Cochrane risk of bias tool was used for the clinical studies, whereas the QUIN tool was used for the in vitro studies. A meta-analysis was performed to compare the positional accuracy of r-CAIS with <span>d</span>-CAIS.</div></div><div><h3>Results</h3><div><span>Thirteen studies were included, with 9 in vitro studies, 4 clinical studies, and a total of 920 dental implants. A high risk of bias was noted in 6 studies and low to moderate in 7 studies. R-CAIS showed greater accuracy for the coronal, apical, and angular deviations compared with </span><span>d</span>-CAIS. (−0.17 [–0.24, 0.09], (<em>P</em>&lt;.001); −0.21 [−0.36, −0.06] (<em>P</em>=.006), and −1.41 [−1.56, −1.26] (<em>P</em>&lt;.001))</div></div><div><h3>Conclusions</h3><div>R-CAIS can provide improved positional accuracy compared with <span>d</span>-CAIS when considering coronal, apical, and angular deviations. However, evidence to compare the positional accuracy of r-CAIS with s-CAIS was insufficient. These results should be interpreted with caution because of the limited data and the bias noted in several studies.</div></div>","PeriodicalId":16866,"journal":{"name":"Journal of Prosthetic Dentistry","volume":null,"pages":null},"PeriodicalIF":4.3,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140136896","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}