Journal of Advanced Prosthodontics最新文献

{"title":"Effect of exposure energy dose on lateral resolution and flexural strength of three-dimensionally printed dental zirconia.","authors":"Kyle Radomski, Yun-Hee Lee, Sang J Lee, Hyung-In Yoon","doi":"10.4047/jap.2023.15.5.248","DOIUrl":"10.4047/jap.2023.15.5.248","url":null,"abstract":"<p><strong>Purpose: </strong>This study aims to evaluate the effects of exposure energy on the lateral resolution and mechanical strength of dental zirconia manufactured using digital light processing (DLP).</p><p><strong>Materials and methods: </strong>A zirconia suspension and a custom top-down DLP printer were used for in-office manufacturing. The viscosity of the suspension and uniformity of the exposed light intensity were controlled. Based on the exposure energy dose delivered to each layer, the specimens were classified into three groups: low-energy (LE), medium-energy (ME), and high-energy (HE). For each energy group, a simplified molar cube was used to measure the widths of the outline (<i>X</i>_<i>o</i> and <i>Y</i>_<i>o</i>) and isthmus (<i>X</i>_<i>i</i> and <i>Y</i>_<i>i</i>), and a bar-shaped specimen of the sintered body was tested. A Kruskal-Wallis test for the lateral resolution and one-way analysis of variance for the mechanical strength were performed (α = .05).</p><p><strong>Results: </strong>The zirconia green bodies of the ME group showed better lateral resolution than those of the LE and HE groups (both <i>P</i> < .001). Regarding the flexural strength of the sintered bodies, the ME group had the highest mean value, whereas the LE group had the lowest mean value (both <i>P</i> < .05). The ME group exhibited fewer agglomerates than the LE group, with no distinctive interlayer pores or surface defects.</p><p><strong>Conclusion: </strong>Based on these findings, the lateral resolution of the green body and flexural strength of the sintered body of dental zirconia could be affected by the exposure energy dose during DLP. The exposure energy should be optimized when fabricating DLP-based dental zirconia.</p>","PeriodicalId":51291,"journal":{"name":"Journal of Advanced Prosthodontics","volume":"15 5","pages":"248-258"},"PeriodicalIF":2.6,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10625885/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71488661","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A prospective multicenter clinical study on the efficiency of detachable ball- and spring-retained implant prosthesis.","authors":"Min-Jung Kim,&nbsp;Won-Tak Cho,&nbsp;Su-Hyun Hwang,&nbsp;Ji-Hyeon Bae,&nbsp;Eun-Bin Bae,&nbsp;June-Sung Shim,&nbsp;Jong-Eun Kim,&nbsp;Chang-Mo Jeong,&nbsp;Jung-Bo Huh","doi":"10.4047/jap.2023.15.4.202","DOIUrl":"https://doi.org/10.4047/jap.2023.15.4.202","url":null,"abstract":"PURPOSE This prospective clinical study was conducted to evaluate the clinical usefulness of the freely detachable zirconia ball- and spring-retained implant prosthesis (BSRP) through a comparative analysis of screw- and cement-retained implant prosthesis (SCRP). MATERIALS AND METHODS A multi-center, randomized, prospective clinical study evaluating the clinical usefulness of the detachable zirconia ball- and spring-retained implant prostheses was conducted. Sixty-four implant prostheses in 64 patients were examined. Periodic observational studies were conducted at 0, 3, 6, and 12 months after delivery of the implant prosthesis. Factors such as implant success rate, marginal bone resorption, periodontal pocket depth, plaque and bleeding index, and prosthetic complications were evaluated, respectively. RESULTS During the 1-year observation period, all implants survived without functional problems and clinical mobility, showing a 100% implant success rate. Marginal bone resorption was significantly higher in the SCRP group than in the BSRP group only at the time of implant prosthesis delivery (P = .043). In all observation periods, periodontal pocket depth was slightly higher in the BSRP group than in the SCRP group, but there was no significant difference (P > .05). The modified plaque index (mPI) scores of both groups were moderate. Higher ratio of a score 2 in modified sulcus bleeding index (mBI) was observed in the BSRP group in the 6- and 12-months observation. CONCLUSION Within the limitations of this study, the newly developed zirconia ball- and spring-retained implant prosthesis could be considered as an applicable and predictable treatment method along with the existing screw- and cement-retained prosthesis.","PeriodicalId":51291,"journal":{"name":"Journal of Advanced Prosthodontics","volume":"15 4","pages":"202-213"},"PeriodicalIF":2.6,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/87/66/jap-15-202.PMC10471505.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10149377","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The mechanical properties of 3D printed denture base resin incorporating essential oil microcapsules.","authors":"Steve An,&nbsp;Jane Lesleigh Evans,&nbsp;Stephen Hamlet,&nbsp;Robert Matthew Love","doi":"10.4047/jap.2023.15.4.189","DOIUrl":"https://doi.org/10.4047/jap.2023.15.4.189","url":null,"abstract":"<p><strong>Purpose: </strong>The aim of this study was to investigate the mechanical properties of three-dimensional (3D) printed denture base resin incorporating microcapsules containing plant essential oils.</p><p><strong>Materials and methods: </strong>Denture base specimens containing up to 3% w/v essential oil microcapsule powders (MCPs), i.e., eucalyptus, geranium, lavender, menthol, and tea tree, in two resins (Detax and NextDent 3D+) were 3D printed using two printers (Asiga and NextDent 5100). The dispersion and interaction of the MCPs in the resin were assessed by SEM while the mechanical properties of the incorporated denture base including flexural strength (MPa), flexural modulus (MPa), Vickers hardness (VHN), and surface roughness (Ra) were also subsequently evaluated. Statistical analysis of any differences in mean values was determined using a two-way ANOVA with Tukey's post hoc testing (α = .05).</p><p><strong>Results: </strong>The spherical shape of the MCPs was maintained during the mixing and polymerization/printing process. However, the Detax-Asiga group showed significant agglomeration of the MCPs even at the lowest MCP concentration levels (0.5% w/v). Overall, as the microcapsule concentration increased, the mean flexural strength decreased, though the menthol MCP groups remained compliant with the ISO standard. The flexural modulus and harness remained relatively unchanged, and the flexural modulus complied with the ISO standard regardless of the MCP concentration. Surface roughness increased with the addition of the MCPs but also remained below that required for clinical acceptance.</p><p><strong>Conclusion: </strong>Incorporation of microencapsulated plant essential oils into 3D printed denture base resin was successfully achieved. While incorporation negatively influenced flexural strength and surface roughness, little effect on flexural modulus and Vickers hardness was demonstrated.</p>","PeriodicalId":51291,"journal":{"name":"Journal of Advanced Prosthodontics","volume":"15 4","pages":"189-201"},"PeriodicalIF":2.6,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/04/9e/jap-15-189.PMC10471502.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10142879","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of connector configuration on the fracture load in conventional and translucent zirconia three-unit fixed dental prostheses.","authors":"Chonticha Subsomboon,&nbsp;Somchai Urapepon","doi":"10.4047/jap.2023.15.4.171","DOIUrl":"https://doi.org/10.4047/jap.2023.15.4.171","url":null,"abstract":"<p><strong>Purpose: </strong>The purpose of this study was to determine the effect of the connector configuration on the fracture load in conventional and translucent zirconia of three-unit fixed dental prostheses (FDPs).</p><p><strong>Materials and methods: </strong>Six different three-unit FDPs were prepared (n = 6) from three types of zirconia (3Y-TZP (Katana ML^®), 4Y-TZP (Katana STML^®), and 5Y-TZP (Katana UTML^®)) in combination with two connector configurations (4 × 2.25, 3 × 3 mm). The Co-Cr master models were scanned, and the FDPs were designed and fabricated using CAD-CAM. The FDPs were cemented on the metal model and then loaded with a UTM at a crosshead speed of 1 mm/min until failure. Two-way ANOVA and Tukey's test were used for statistical analysis (α = .05).</p><p><strong>Results: </strong>Fracture loads of 3Y-TZP (2740.6 ± 469.2 and 2718.7 ± 339.0 N for size 4 × 2.25 mm and 3 × 3 mm, respectively) were significantly higher than those of 4Y-TZP (1868.3 ± 281.6 and 1663.6 ± 372.7 N, respectively) and 5Y-TZP (1588.0 ± 255.0 and 1559.1 ± 110.0 N, respectively) (<i>P</i> < .05). No significant difference was found between fracture loads of 4Y-TZP and 5Y-TZP (<i>P</i> > .05). The connector configuration within 9 mm² was found to have no effect on the fracture loads on all three types of zirconia (<i>P</i> > .05).</p><p><strong>Conclusion: </strong>Fracture loads of three-unit FDPs were affected by the type of zirconia. The fracture loads of conventional zirconia were higher than those of translucent zirconia. However, it was not affected by the connector configuration when the connector had a cross-sectional area of 9 mm².</p>","PeriodicalId":51291,"journal":{"name":"Journal of Advanced Prosthodontics","volume":"15 4","pages":"171-178"},"PeriodicalIF":2.6,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/b6/9b/jap-15-171.PMC10471503.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10149375","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparison of 3D accuracy of three different digital intraoral scanners in full-arch implant impressions.","authors":"Ozcan Akkal,&nbsp;Ismail Hakki Korkmaz,&nbsp;Funda Bayindir","doi":"10.4047/jap.2023.15.4.179","DOIUrl":"https://doi.org/10.4047/jap.2023.15.4.179","url":null,"abstract":"<p><strong>Purpose: </strong>This <i>in vitro</i> study aimed to evaluate the performance of digital intraoral scanners in a completely edentulous patient with angled and parallel implants.</p><p><strong>Materials and methods: </strong>A total of 6 implants were placed at angulations of 0°, 5°, 0°, 0°, 15°, and 0° in regions #36, #34, #32, #42, #44, and #46, respectively, in a completely edentulous mandibular polyurethane model. Then, the study model created by connecting a scan body on the implants was scanned using a model scanner, and a 3D reference model was obtained. Three different intraoral scanners were used for digital impressions (PS group, TR group, and CS group, n = 10 in each group). The distances and angles between the scan bodies in these measurement groups were measured.</p><p><strong>Results: </strong>While the Primescan (PS) impression group had the highest accuracy with 38 µm, the values of 104 µm and 171 µm were obtained with Trios 4 IOSs (TR) and Carestream 3600 (CS), respectively (<i>P</i> = .001). The CS scanner constituted the impression group with the highest deviation in terms of accuracy. In terms of dimensional differences in the angle parameter, a statistically significant difference was revealed among the mean deviation angle values according to the scanners (<i>P</i> < .001). While the lowest angular deviation was obtained with the PS impression group with 0.185°, the values of 0.499° and 1.250° were obtained with TR and CS, respectively. No statistically significant difference was detected among the impression groups in terms of precision values (<i>P</i> > .05).</p><p><strong>Conclusion: </strong>A statistically significant difference was found among the three digital impression groups upon comparing the impression accuracy. Implant angulation affected the impression accuracy of the digital impression groups. The most accurate impressions in terms of both distance and angle deviation were obtained with the PS impression group.</p>","PeriodicalId":51291,"journal":{"name":"Journal of Advanced Prosthodontics","volume":"15 4","pages":"179-188"},"PeriodicalIF":2.6,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/a1/bf/jap-15-179.PMC10471506.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10154698","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluation of bite force, quality of life, and patients' satisfaction in elderly edentulous patients using implant overdentures.","authors":"Esra Nur Avukat,&nbsp;Canan Akay,&nbsp;Emre Mumcu","doi":"10.4047/jap.2023.15.4.214","DOIUrl":"https://doi.org/10.4047/jap.2023.15.4.214","url":null,"abstract":"<p><strong>Purpose: </strong>This study aimed to compare the bite force (BF) between complete dentures and implant overdentures (IODs) retained by two mandibular implants. Additionally, we evaluated the quality of life (QoL) and patient satisfaction among individuals using IODs. In addition, the effects of demographic parameters such as age and sex, and clinical parameters such as implant length, implant diameter, attachment height, attachment color, and interimplant distance on BF, QoL, and patient satisfaction were evaluated.</p><p><strong>Materials and methods: </strong>A total of 51 edentulous patients rehabilitated with the maxillary complete dentures and mandibular IODs retained by two implants were included in this study. BF was measured using a force meter pre- and post-implant in the same patients. Oral health-related quality of life (OHRQoL) was assessed with the Oral Health Impact Profile (OHIP-14) and patient satisfaction was assessed with the Visual Analog Scale (VAS) questionnaires.</p><p><strong>Results: </strong>It was found that BF values were statistically higher for IODs than complete dentures (<i>P</i> < .001). In terms of attachment height of the OHIP scores, there was a significant difference in the psychological disability and social disability domains (<i>P</i> < .05). When examining the change in patient satisfaction as a function of sex, it was found that mandibular retention satisfaction differed significantly by sex (<i>P</i> < .05), but there was no significant difference in the other domains.</p><p><strong>Conclusion: </strong>Within the limitations of this study, it was observed that the BF increased after the use of IODs. Several factors, including age, interimplant distance, attachment height, and attachment color, were found to impact OHRQoL. Sex and implant diameter were identified as factors affecting patient satisfaction.</p>","PeriodicalId":51291,"journal":{"name":"Journal of Advanced Prosthodontics","volume":"15 4","pages":"214-226"},"PeriodicalIF":2.6,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/4c/48/jap-15-214.PMC10471504.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10149372","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Reliability of implant stability measuring devices depending on various clinical conditions: an <i>in vitro</i> study.","authors":"Han-Na Lee,&nbsp;Myoung-Sub Kim,&nbsp;Jeong-Yol Lee,&nbsp;Xu Zihan,&nbsp;Jae-Jun Ryu,&nbsp;Ji-Suk Shim","doi":"10.4047/jap.2023.15.3.126","DOIUrl":"https://doi.org/10.4047/jap.2023.15.3.126","url":null,"abstract":"<p><strong>Purpose: </strong>The aim of this study was to evaluate the reliability of implant stability measuring devices depending on the location of the implant and the position of the patient.</p><p><strong>Materials and methods: </strong>Six implants were installed in different dentate sextants of six artificial bone models. Implant stability was measured in three conditions of the bone model (without mounting on a phantom head, mounted on a phantom head in supine position, and mounted on a phantom head in upright position). A resonance frequency analysis device (Osstell) and two damping capacity analysis devices (Periotest and Anycheck) were used to measure implant stability. The values measured outside the phantom head were treated as controls, and the values inside the phantom head were compared using an independent <i>t</i>-test.</p><p><strong>Results: </strong>Osstell showed different results in two of the six divisions in both the supine and upright positions compared to outside of the mouth (<i>P</i> < .05). Periotest showed different results in all six parts in the supine position and in five parts in the upright position compared to outside of the mouth (<i>P</i> < .05). While Anycheck showed different results in five areas in the supine position compared to outside of the mouth, it showed different results in only one area in the upright position (<i>P</i> < .05).</p><p><strong>Conclusion: </strong>In the difficult implant position for the operator to access, the implant stability measuring devices show less reliability. The accessibility of implant is greatly affected in the order of Osstell, Anycheck, and Periotest.</p>","PeriodicalId":51291,"journal":{"name":"Journal of Advanced Prosthodontics","volume":"15 3","pages":"126-135"},"PeriodicalIF":2.6,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/32/f2/jap-15-126.PMC10333099.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10175404","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparison of fit and trueness of zirconia crowns fabricated by different combinations of open CAD-CAM systems.","authors":"Eun-Bin Bae,&nbsp;Won-Tak Cho,&nbsp;Do-Hyun Park,&nbsp;Su-Hyun Hwang,&nbsp;So-Hyoun Lee,&nbsp;Mi-Jung Yun,&nbsp;Chang-Mo Jeong,&nbsp;Jung-Bo Huh","doi":"10.4047/jap.2023.15.3.155","DOIUrl":"https://doi.org/10.4047/jap.2023.15.3.155","url":null,"abstract":"<p><strong>Purpose: </strong>This study aims to clinically compare the fitness and trueness of zirconia crowns fabricated by different combinations of open CAD-CAM systems.</p><p><strong>Materials and methods: </strong>Total of 40 patients were enrolled in this study, and 9 different zirconia crowns were prepared per patient. Each crown was made through the cross-application of 3 different design software (EZIS VR, 3Shape Dental System, Exocad) with 3 different processing devices (Aegis HM, Trione Z, Motion 2). The marginal gap, absolute marginal discrepancy, internal gap(axial, line angle, occlusal) by a silicone replica technique were measured to compare the fit of the crown. The scanned inner and outer surfaces of the crowns were compared to CAD data using 3D metrology software to evaluate trueness.</p><p><strong>Results: </strong>There were significant differences in the marginal gap, absolute marginal discrepancy, axial and line angle internal gap among the groups (<i>P</i> < .05) in the comparison of fit. There was no statistically significant difference among the groups in terms of occlusal internal gap. The trueness ranged from 36.19 to 43.78 µm but there was no statistically significant difference within the groups (<i>P</i> > .05).</p><p><strong>Conclusion: </strong>All 9 groups showed clinically acceptable level of marginal gaps ranging from 74.26 to 112.20 µm in terms of fit comparison. In the comparison of trueness, no significant difference within each group was spotted. Within the limitation of this study, open CAD-CAM systems used in this study can be assembled properly to fabricate zirconia crown.</p>","PeriodicalId":51291,"journal":{"name":"Journal of Advanced Prosthodontics","volume":"15 3","pages":"155-170"},"PeriodicalIF":2.6,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/d7/0e/jap-15-155.PMC10333096.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9872420","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of internal structures on the accuracy of 3D printed full-arch dentition preparation models in different printing systems.","authors":"Teng Ma,&nbsp;Tiwu Peng,&nbsp;Yang Lin,&nbsp;Mindi Zhang,&nbsp;Guanghui Ren","doi":"10.4047/jap.2023.15.3.145","DOIUrl":"https://doi.org/10.4047/jap.2023.15.3.145","url":null,"abstract":"<p><strong>Purpose: </strong>The objective of this study was to investigate how internal structures influence the overall and marginal accuracy of full arch preparations fabricated through additive manufacturing in different printing systems.</p><p><strong>Materials and methods: </strong>A full-arch preparation digital model was set up with three internal designs, including solid, hollow, and grid. These were printed using three different resin printers with nine models in each group. After scanning, each data was imported into the 3D data processing software together with the master cast, aligned and trimmed, and then put into the 3D data analysis software again to compare the overall and marginal deviation whose results are expressed using root mean square values and color maps. To evaluate the trueness of the resin model, the test data and reference data were compared, and the precision was evaluated by comparing the test data sets. Color maps were observed for qualitative analysis. Data were statistically analyzed by one-way analysis of variance and Bonferroni method was used for post hoc comparison (α = .05).</p><p><strong>Results: </strong>The influence of different internal structures on the accuracy of 3D printed resin models varied significantly (<i>P</i> < .05). Solid and grid models showed better accuracy, while the hollow model exhibited poor accuracy. The color maps show that the resin models have a tendency to shrink inwards.</p><p><strong>Conclusion: </strong>The internal structure design influences the accuracy of the 3D printing model, and the effect varies in different printing systems. Irrespective of the kind of printing system, the printing accuracy of hollow model was observed to be worse than those of solid and grid models.</p>","PeriodicalId":51291,"journal":{"name":"Journal of Advanced Prosthodontics","volume":"15 3","pages":"145-154"},"PeriodicalIF":2.6,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/c7/85/jap-15-145.PMC10333097.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9872424","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of abutment types and resin cements on the esthetics of implant-supported restorations.","authors":"Asena Çeken,&nbsp;Hamiyet Kılınç,&nbsp;Sedanur Turgut","doi":"10.4047/jap.2023.15.3.114","DOIUrl":"https://doi.org/10.4047/jap.2023.15.3.114","url":null,"abstract":"<p><strong>Purpose: </strong>The aim of the study was to evaluate the optical properties of new generation (3Y-TZP) monolithic zirconia (MZ) with different abutment types and resin cement shades.</p><p><strong>Materials and methods: </strong>A1/LT MZ specimens were prepared (10 × 12 × 1 mm, N = 30) and divided into 3 groups according to cement shades as transparent (Tr), yellow (Y) and opaque (O). Abutment specimens were obtained from 4 different materials including zirconia (Group Z), hybrid (Group H), titanium (Group T) and anodized yellow titanium (Group AT). MZ and abutment specimens were then cemented. L^*, a^*, and b^* parameters were obtained from MZ, MZ + abutment, and MZ + abutment + cement. ΔE₀₀₁^* (between MZ and MZ + abutment), ΔE₀₀₂^* (between MZ and MZ + abutment + cement) and ΔE₀₀₃^* (between MZ + abutment and MZ + abutment + cement) values were calculated. Statistical analyses included 2-way ANOVA, Bonferroni, and Paired Sample <i>t</i>-Tests (<i>P</i> < .05).</p><p><strong>Results: </strong>Abutment types and resin cements had significant effect on L^*, a^*, b^*, ΔE₀₀₁^*, ΔE₀₀₂^*, and ΔE₀₀₃^* values (<i>P</i> < .001). Without cementation, whereas zirconia abutment resulted in the least discoloration (ΔE₀₀₁^* = 0.68), titanium abutment caused the most discoloration (ΔE₀₀₁^* = 4.99). The least ΔE₀₀₂^* = 0.68 value was seen using zirconia abutment after cementation with yellow shaded cement. Opaque shaded cement caused the most color change (ΔE₀₀₃^* = 5.24). Cement application increased the L^* values in all groups.</p><p><strong>Conclusion: </strong>The least color change with/without cement was observed in crown configurations created with zirconia abutments. Zirconia and hybrid abutments produced significantly lower ΔE₀₀₂^* and ΔE₀₀₃^* values in combination with yellow shaded cement. The usage of opaque shaded cement in titanium/anodized titanium groups may enable the clinically unacceptable ΔE₀₀^* value to reach the acceptable level.</p>","PeriodicalId":51291,"journal":{"name":"Journal of Advanced Prosthodontics","volume":"15 3","pages":"114-125"},"PeriodicalIF":2.6,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/1e/0c/jap-15-114.PMC10333101.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9872422","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}