Journal of prosthodontic research最新文献_第6页

Effects of ceramic thickness, ceramic translucency, and light transmission on light-cured bulk-fill resin composites as luting cement of lithium disilicate based-ceramics. 陶瓷厚度、陶瓷半透明度和透光率对光固化大块填充树脂复合材料作为二硅酸锂基陶瓷胶合剂的影响

IF 3.6 2区医学

Journal of prosthodontic research Pub Date : 2024-04-08 Epub Date: 2023-05-17 DOI: 10.2186/jpr.JPR_D_22_00304

Ting-An Chen, Pei-Ying Lu, Po-Yen Lin, Chih-Wen Chi, Hon Yin Cheng, Yu-Jung Lai, Fajen Wang, Yu-Chih Chiang

{"title":"Effects of ceramic thickness, ceramic translucency, and light transmission on light-cured bulk-fill resin composites as luting cement of lithium disilicate based-ceramics.","authors":"Ting-An Chen, Pei-Ying Lu, Po-Yen Lin, Chih-Wen Chi, Hon Yin Cheng, Yu-Jung Lai, Fajen Wang, Yu-Chih Chiang","doi":"10.2186/jpr.JPR_D_22_00304","DOIUrl":"10.2186/jpr.JPR_D_22_00304","url":null,"abstract":"Purpose: To assess the effects of ceramic thickness, ceramic translucency, and light transmission on restorative composites used as luting cement for lithium disilicate-based ceramics.Methods: Four luting types of cement were tested (n=8); a dual-cured resin cement (Multilink N), a light-cured conventional flowable composite (Tetric N-Flow), and two light-cured bulk-fill flowable composites (Tetric N-Flow Bulk Fill and X-tra base). The 20 s- or 40 s-light (1000 mW/cm2) was transmitted through 1- or 2-mm-thick high- or low-translucency (HT- or LT-) ceramic discs (IPS e.Max press) to reach the 1-mm-thick luting cement. Light transmitted to cement without ceramic served as a control. Vickers hardness number (VHN), flexural strength (FS), fractography, and degree of conversion (DC) were evaluated. One-way and multi-way analysis of variance was conducted to determine the effects of factors on VHN and FS.Results: Ceramic thickness, light transmission time, and cement type significantly affected the VHN of the luting cement (P < .000). Only Multilink N (LT- and HT-1mm) and Tetric N-Flow (HT-1mm) reached 90% VHN of corresponding control by 20 s-light transmissions, but Tetric N-Flow exhibited lowest VHN and approximately 1/3-1/2 VHN of Multilink N (P < 0.05). X-tra base expressed superior physicochemical properties to Tetric N-Flow Bulk Fill (P < 0.05) and reached >90% VHN of control in all conditions with 40 s-light transmissions except for LT-2 mm. DC, FS, and fractography supported these findings.Conclusions: The light-cured bulk-fill composite served as a luting cement for lithium-disilicate-based ceramics in a product-dependent manner. Light transmission time is crucial to ensure sufficient luting cement polymerization.","PeriodicalId":16887,"journal":{"name":"Journal of prosthodontic research","volume":null,"pages":null},"PeriodicalIF":3.6,"publicationDate":"2024-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9479552","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}

引用次数: 0

Marginal adaptation and fracture resistance of milled and 3D-printed CAD/CAM hybrid dental crown materials with various occlusal thicknesses. 不同咬合厚度的铣制和 3D 打印 CAD/CAM 混合牙冠材料的边缘适应性和抗断裂性。

IF 3.6 2区医学

Journal of prosthodontic research Pub Date : 2024-04-08 Epub Date: 2023-07-12 DOI: 10.2186/jpr.JPR_D_23_00089

Pisit Suksuphan, Nantawan Krajangta, Pavinee Padipatvuthikul Didron, Thanakorn Wasanapiarnpong, Thanasak Rakmanee

{"title":"Marginal adaptation and fracture resistance of milled and 3D-printed CAD/CAM hybrid dental crown materials with various occlusal thicknesses.","authors":"Pisit Suksuphan, Nantawan Krajangta, Pavinee Padipatvuthikul Didron, Thanakorn Wasanapiarnpong, Thanasak Rakmanee","doi":"10.2186/jpr.JPR_D_23_00089","DOIUrl":"10.2186/jpr.JPR_D_23_00089","url":null,"abstract":"Purpose: To evaluate the marginal adaptation and fracture resistance of three computer-aided design/computer-assisted manufacturing hybrid dental materials with different occlusal thicknesses.Methods: Ninety single-molar crowns were digitally fabricated using a milled hybrid nanoceramic (Cerasmart, CE), polymer-infiltrated ceramic network (PICN, Vita Enamic, VE), and 3D-printed materials (Varseosmile, VS) with occlusal thicknesses of 0.8, 1, and 1.5 mm (10 specimens/group). Anatomical 3D-printed resin dies (Rigid 10K) were used as supporting materials. A CEREC MCX milling unit and a DLP-based 3D printer, Freeform Pro 2, were utilized to produce the crown samples. Before cementation, the marginal adaptation, absolute marginal discrepancy (AMD), and marginal gap (MG) were assessed using micro-CT scanning. After cementation with self-adhesive resin cement, fracture resistance was evaluated using a universal testing machine. The number of fractured crowns and the maximum fracture values (N) were recorded. Data were statistically analyzed using both one- and two-way ANOVA, followed by Tukey's honestly significant difference (HSD) test.Results: For all occlusal thicknesses, the VS crowns demonstrated the lowest AMD and MG distances, significantly different from those of the other two milling groups (P < 0.05), whereas CE and VE did not differ significantly (P > 0.05). All VS crowns were fractured using the lowest loading forces (1480.3±226.1 to 1747.2±108.7 N). No CE and 1 and 1.5 mm VE crowns fractured under a 2000 N maximum load.Conclusions: All hybrid-material crowns demonstrated favorable marginal adaptation within a clinically acceptable range, with 3D printing yielding superior results to milling. All materials could withstand normal occlusal force even with a 0.8 mm occlusal thickness.","PeriodicalId":16887,"journal":{"name":"Journal of prosthodontic research","volume":null,"pages":null},"PeriodicalIF":3.6,"publicationDate":"2024-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9763793","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}

引用次数: 0

Effects of surface glazing on the mechanical and biological properties of 3D printed permanent dental resin materials. 表面上釉对 3D 打印永久性牙科树脂材料的机械和生物特性的影响。

IF 3.6 2区医学

Journal of prosthodontic research Pub Date : 2024-04-08 Epub Date: 2023-06-22 DOI: 10.2186/jpr.JPR_D_22_00261

Na-Eun Nam, Na-Kyung Hwangbo, Jong-Eun Kim

{"title":"Effects of surface glazing on the mechanical and biological properties of 3D printed permanent dental resin materials.","authors":"Na-Eun Nam, Na-Kyung Hwangbo, Jong-Eun Kim","doi":"10.2186/jpr.JPR_D_22_00261","DOIUrl":"10.2186/jpr.JPR_D_22_00261","url":null,"abstract":"Purpose This study aimed to determine the surface glazing effect on the mechanical and biological properties of three-dimensional printed dental permanent resins.Methods Specimens were prepared using Formlabs, Graphy Tera Harz permanent, and NextDent C&B temporary crown resins. Specimens were divided into three groups: samples with untreated surfaces, glazed surfaces, and sand-glazed surfaces. The flexural strength, Vickers hardness, color stability, and surface roughness of the samples were analyzed to identify their mechanical properties. Their cell viability and protein adsorption were analyzed to identify their biological properties.Results The flexural strength and Vickers hardness of the samples with sand glazed and glazed surfaces were significantly increased. The color change was higher for surface untreated samples than that for the samples with sand-glazed and glazed surfaces. The surface roughness of the samples with sand-glazed and glazed surfaces was low. The samples with sand-glazed and glazed surfaces have low protein adsorption ability and high cell viability.Conclusions Surface glazing increased the mechanical strength, color stability, and cell compatibility, while reducing the Ra and protein adsorption of 3D-printed dental resins. Thus, a glazed surface exhibited a positive effect on the mechanical and biological properties of 3D-printed resins.","PeriodicalId":16887,"journal":{"name":"Journal of prosthodontic research","volume":null,"pages":null},"PeriodicalIF":3.6,"publicationDate":"2024-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9526051","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}

引用次数: 0

Alveolar ridge preservation in rat tooth extraction model by chitosan-derived epigenetic modulation scaffold. 壳聚糖衍生表观遗传调控支架在大鼠拔牙模型中保护牙槽嵴

IF 3.6 2区医学

Journal of prosthodontic research Pub Date : 2024-04-08 Epub Date: 2023-07-12 DOI: 10.2186/jpr.JPR_D_23_00006

Teerawat Sukpaita, Suwabun Chirachanchai, Theerapat Chanamuangkon, Atiphan Pimkhaokham, Ruchanee Salingcarnboriboon Ampornaramveth

{"title":"Alveolar ridge preservation in rat tooth extraction model by chitosan-derived epigenetic modulation scaffold.","authors":"Teerawat Sukpaita, Suwabun Chirachanchai, Theerapat Chanamuangkon, Atiphan Pimkhaokham, Ruchanee Salingcarnboriboon Ampornaramveth","doi":"10.2186/jpr.JPR_D_23_00006","DOIUrl":"10.2186/jpr.JPR_D_23_00006","url":null,"abstract":"Purpose: Alveolar ridge preservation is a surgical technique used to prevent dimensional changes in the alveolar bone by dressing biomaterials in the extraction socket. Recently, a chitosan biphasic calcium phosphate loaded with trichostatin A (CS/BCP/TSA) scaffold was introduced as an excellent bone-regeneration material. This study aimed to explore the biological properties of released trichostatin A (TSA) and evaluate the potential of the CS/BCP/TSA scaffold in preserving the alveolar ridge in a rat tooth extraction model.Methods: In vitro biocompatibility, histone deacetylase (HDAC) activity, and osteogenic differentiation of MC3T3-E1 cells were tested. For in vivo studies, the maxillary first molars (M1) of Wistar rats were extracted, and alveolar ridge preservation was performed using a CS/BCP/TSA scaffold or commercial bone graft. Micro-Computed Tomography (micro-CT), polyfluorochrome labeling, and histological analysis were used to evaluate the ridge-preservation ability.Results: The released TSA was cytocompatible. Inhibition of histone deacetylase (HDAC) activity and induction of osteogenic differentiation in MC3T3-E1 cells were confirmed. The socket dressing with the CS/BCP/TSA scaffold showed increased socket bone fill and preserved the buccal and middle aspects of the alveolar ridge compared with the conventional graft. Further analysis of the bone regeneration ability by histomorphometric and histological analyses demonstrated that CS/BCP/TSA showed a significantly higher potential to induce bone formation and complete healing in the extraction socket than the other groups.Conclusions: The CS/BCP/TSA scaffold is a novel candidate for alveolar ridge preservation.","PeriodicalId":16887,"journal":{"name":"Journal of prosthodontic research","volume":null,"pages":null},"PeriodicalIF":3.6,"publicationDate":"2024-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9772917","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}

引用次数: 0

Effects of brushing on denture resins for 3D printing. 刷牙对 3D 打印义齿树脂的影响。

IF 3.6 2区医学

Journal of prosthodontic research Pub Date : 2024-04-08 Epub Date: 2023-08-11 DOI: 10.2186/jpr.JPR_D_23_00062

Marcela Dantas Dias da Silva, Thais Soares Bezerra Santos Nunes, Hamile Emanuella do Carmo Viotto, Raphael Freitas de Souza, Ana Carolina Pero

引用次数: 0

Effects of various functional monomers' reaction on the surface characteristics and bonding performance of polyetheretherketone. 各种功能性单体反应对聚醚醚酮表面特性和粘合性能的影响。

IF 3.6 2区医学

Journal of prosthodontic research Pub Date : 2024-04-08 Epub Date: 2023-08-11 DOI: 10.2186/jpr.JPR_D_23_00063

Huei-Yu Huang, Sheng-Wei Feng, Kuan-Yu Chiang, Yun-Chen Li, Tzu-Yu Peng, Hiroki Nikawa

{"title":"Effects of various functional monomers' reaction on the surface characteristics and bonding performance of polyetheretherketone.","authors":"Huei-Yu Huang, Sheng-Wei Feng, Kuan-Yu Chiang, Yun-Chen Li, Tzu-Yu Peng, Hiroki Nikawa","doi":"10.2186/jpr.JPR_D_23_00063","DOIUrl":"10.2186/jpr.JPR_D_23_00063","url":null,"abstract":"Purpose: Polyetheretherketone (PEEK) is a new polymeric material that has received significant attention in dentistry because of its mechanical properties, biocompatibility, and aesthetics. However, the bonding performance of PEEK to other materials is not preferable. This study aimed to analyze the variations in the surface characteristics of PEEK under the chemical action of primers containing different functional monomers or polymers and to evaluate the bonding performance of PEEK and dental cement.Methods: Disk-shaped PEEK samples were prepared by dental milling, blasting with alumina oxide, and covering with primers containing functional monomers or polymers. The surface characteristics of the samples were analyzed by microscopy and spectroscopy. The shear bond strength (SBS) between PEEK and dental cement, with and without thermocycling, was tested using a universal testing machine. Finally, the data were statistically analyzed and compared.Results: Functional monomers or polymers were successfully bonded to the surface of PEEK. This treatment significantly improved its hydrophilicity and surface free energy (P < 0.05). The primer containing pentaerythritol triacrylate had the highest SBS without thermocycling (13.89 MPa). Meanwhile, the primers containing urethane dimethacrylate (UDMA) and methyl methacrylate (MMA) (abbreviated as the HC group) showed the highest SBS and lowest reduction (25.51%) after thermocycling. Notably, all the testing groups achieved the ISO10477 standard of 5 MPa. After thermocycling, adhesive failure accounted for the largest proportion of failures in all the groups except the HC group.Conclusions: The chemical priming treatment can significantly improve the SBS of PEEK and dental cement. Moreover, a primer containing both UDMA and MMA can provide improved bonding for PEEK materials.","PeriodicalId":16887,"journal":{"name":"Journal of prosthodontic research","volume":null,"pages":null},"PeriodicalIF":3.6,"publicationDate":"2024-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9992687","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}

引用次数: 0

Effect of filler contents on the bond strength of CAD/CAM resin crowns: New resin primer versus conventional silane agents. 填料含量对 CAD/CAM 树脂牙冠粘接强度的影响：新型树脂底漆与传统硅烷剂的对比。

IF 3.6 2区医学

Journal of prosthodontic research Pub Date : 2024-04-08 Epub Date: 2023-06-07 DOI: 10.2186/jpr.JPR_D_22_00301

Ryosuke Hagino, Atsushi Mine, Mariko Aoki-Matsumoto, Jiro Miura, Masahiro Yumitate, Shintaro Ban, Masaya Ishida, Munechika Takaishi, Bart Van Meerbeek, Hirofumi Yatani, Shoichi Ishigaki

{"title":"Effect of filler contents on the bond strength of CAD/CAM resin crowns: New resin primer versus conventional silane agents.","authors":"Ryosuke Hagino, Atsushi Mine, Mariko Aoki-Matsumoto, Jiro Miura, Masahiro Yumitate, Shintaro Ban, Masaya Ishida, Munechika Takaishi, Bart Van Meerbeek, Hirofumi Yatani, Shoichi Ishigaki","doi":"10.2186/jpr.JPR_D_22_00301","DOIUrl":"10.2186/jpr.JPR_D_22_00301","url":null,"abstract":"Purpose This study aims to evaluate the effects of resin primers containing methyl methacrylate (MMA) and silane agent on the bonding effectiveness of indirect resin composite blocks with three different filler contents.Methods A commercially available computer-aided design/computer-aided manufacturing (CAD/CAM) resin composite block and two experimental resin composite blocks with different filler contents were alumina-blasted and two surface treatments (primer and silane agent) were applied. The resin cement was built up, and the micro-tensile bond strength (μTBS) was measured after 24 hours, 1 month or 3 months of water storage (n = 24 per group). The fracture surfaces after μTBS measurements and resin block/cement interface were observed by scanning electron microscopy (SEM).Results The primer treatment group showed a significantly higher bond strength than the silane group only in F0 (filler content 0 wt%) group (P < 0.001). In the primer group, F0 and F41 (filler content 41 wt%) groups showed significantly higher bond strengths than F82 (filler content 82 wt%) group (P < 0.001). In contrast, in the silane group, F41 group showed significantly higher bond strength than F0 and F82 groups (P < 0.001), and F82 group showed significantly higher bond strength than F0 group (P < 0.001). SEM revealed that the matrix resin was partially destroyed on the fracture surface of the primer group, and an uneven interface surface was observed compared with that of the silane group.Conclusions MMA-containing primers showed higher bonding effectiveness to CAD/CAM resin composite blocks than the silane treatment.","PeriodicalId":16887,"journal":{"name":"Journal of prosthodontic research","volume":null,"pages":null},"PeriodicalIF":3.6,"publicationDate":"2024-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9591947","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}

引用次数: 0

Jumping gap in immediate implant placement in the esthetic zone: A virtual implant planning using cone-beam computed tomography. 美学区即刻种植体植入的跳跃间隙：使用锥束计算机断层扫描进行虚拟种植规划。

IF 3.6 2区医学

Journal of prosthodontic research Pub Date : 2024-04-08 Epub Date: 2023-08-11 DOI: 10.2186/jpr.JPR_D_23_00033

Suzy Nabil Naiem, Bilal Al-Nawas, Omnia Khaled Tawfik, Hani El-Nahass

{"title":"Jumping gap in immediate implant placement in the esthetic zone: A virtual implant planning using cone-beam computed tomography.","authors":"Suzy Nabil Naiem, Bilal Al-Nawas, Omnia Khaled Tawfik, Hani El-Nahass","doi":"10.2186/jpr.JPR_D_23_00033","DOIUrl":"10.2186/jpr.JPR_D_23_00033","url":null,"abstract":"Purpose: A jumping gap (JG) refers to the implant's future buccal wall; this study aims to estimate the jumping gap dimension in relation to virtual implant placement and subsequently link the implant diameter and implant position with the anatomical site.Methods: This observational study was conducted to analyze the maxillary teeth in the esthetic zone from cone-beam computed tomography (CBCT) scans using OnDemand software. The horizontal jumping gap dimension of each tooth was assessed by subtracting the calculated virtual implant diameter from the socket dimensions.Results: A total of 253 anterior and premolar maxillary teeth were analyzed from 52 CBCT scans. The estimated JG dimensions were 1.23 ± 0.59 mm, 1.80 ± 0.64 mm, 3.02 ± 0.69 mm, for central incisors, lateral incisors and canines respectively, 3.70 ± 0.68 mm for the first premolars showing the highest horizontal gap and 3.19 ± 0.88 mm for second premolars. The incisors showed the smallest horizontal gap compared to the canines and premolars.Conclusions: In terms of JG, immediate implant placement is more favorable at the canine and premolar sites. By contrast, the incisors sites should be handled with extreme caution, where the use of narrower implants is advisable when necessary.","PeriodicalId":16887,"journal":{"name":"Journal of prosthodontic research","volume":null,"pages":null},"PeriodicalIF":3.6,"publicationDate":"2024-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9987920","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}

引用次数: 0

Chronic kidney disease compromises structural and mechanical properties of maxillary cortical bone in a rat model. 慢性肾病损害了大鼠模型上颌骨皮质骨的结构和机械特性。

IF 3.6 2区医学

Journal of prosthodontic research Pub Date : 2024-04-08 Epub Date: 2023-05-20 DOI: 10.2186/jpr.JPR_D_23_00016

Sotaro Yamashita, Yusuke Kondo, Chie Watanabe, Tomotaka Nodai, Takashi Munemasa, Taro Mukaibo, Chihiro Masaki, Yo Shibata, Ryuji Hosokawa

{"title":"Chronic kidney disease compromises structural and mechanical properties of maxillary cortical bone in a rat model.","authors":"Sotaro Yamashita, Yusuke Kondo, Chie Watanabe, Tomotaka Nodai, Takashi Munemasa, Taro Mukaibo, Chihiro Masaki, Yo Shibata, Ryuji Hosokawa","doi":"10.2186/jpr.JPR_D_23_00016","DOIUrl":"10.2186/jpr.JPR_D_23_00016","url":null,"abstract":"Purpose: This study aimed to investigate the effects of chronic kidney disease (CKD) on the structural and mechanical properties of the maxillary and mandibular cortical bone.Methods: The maxillary and mandibular cortical bones from CKD model rats were used in this study. CKD-induced histological, structural, and micro-mechanical alterations were assessed using histological analyses, micro-computed tomography (CT), bone mineral density (BMD) measurements, and nanoindentation tests.Results: Histological analyses indicated that CKD caused an increase in the number of osteoclasts and a decrease in the number of osteocytes in the maxilla. Micro-CT analysis revealed that CKD induced a void volume/cortical volume (%) increase, which was more remarkable in the maxilla than in the mandible. CKD also significantly decreased the BMD in the maxilla. In the nanoindentation stress-strain curve, the elastic-plastic transition point and loss modulus were lower in the CKD group than that in the control group in the maxilla, suggesting that CKD increased micro fragility of the maxillary bone.Conclusions: CKD affected bone turnover in the maxillary cortical bone. Furthermore, the maxillary histological and structural properties were compromised, and micro-mechanical properties, including the elastic-plastic transition point and loss modulus, were altered by CKD.","PeriodicalId":16887,"journal":{"name":"Journal of prosthodontic research","volume":null,"pages":null},"PeriodicalIF":3.6,"publicationDate":"2024-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9491129","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}

引用次数: 0

Fracture resistance and fracture modes in endodontically treated maxillary premolars restored using different CAD-CAM onlays. 使用不同 CAD-CAM 嵌体修复的经牙髓治疗的上颌前磨牙的抗折性和折断模式。

IF 3.6 2区医学

Journal of prosthodontic research Pub Date : 2024-04-08 Epub Date: 2023-05-24 DOI: 10.2186/jpr.JPR_D_22_00311

Nuntana Suksawat, Onauma Angwaravong, Thidarat Angwarawong

{"title":"Fracture resistance and fracture modes in endodontically treated maxillary premolars restored using different CAD-CAM onlays.","authors":"Nuntana Suksawat, Onauma Angwaravong, Thidarat Angwarawong","doi":"10.2186/jpr.JPR_D_22_00311","DOIUrl":"10.2186/jpr.JPR_D_22_00311","url":null,"abstract":"Purpose: To examine the fracture resistance and fracture modes of endodontically treated teeth (ETT) restored using onlays of different materials fabricated using computer-aided design and computer-aided manufacturing (CAD-CAM).Methods: Sixty maxillary first premolars were randomly assigned to six groups (n=10). The first group comprised intact teeth (INT). The remaining premolars were prepared for mesio-occluso-distal cavity and root canal treatments. Group 2 was treated using polymer-reinforced zinc oxide-eugenol intermediate restorative material (IRM). Groups 3-6 were core build-up, prepared for onlay, and restored using resin nanoceramic (Cerasmart [CER]), polymer-infiltrated ceramic networks (Vita Enamic [VE]), lithium disilicate-based ceramic (IPS e.max CAD [EM]), or translucent zirconia (Katana Zirconia UTML [KZ]). All specimens were immersed in 37 °C distilled water for 24 h. Each specimen was loaded at 45° to the long axis until failure (crosshead speed, 0.5 mm/min). Fracture loads were analyzed using one-way analysis of variance and Tukey's post-hoc test (α=0.05).Results: There were no significant differences in fracture load among the INT, CER, VE, and EM groups. The fracture load in the KZ group was significantly higher than those in the other groups (P < 0.05). Fracture load was the lowest in the IRM group (P < 0.05). The unrestorable failure rate was 70% in the KZ group and 10-30% in the other experimental groups.Conclusions: ETT restored using Cerasmart, Vita Enamic, or IPS e.max CAD onlays had fracture resistance and patterns comparable to those of intact teeth. Katana Zirconia UTML-restored ETT had the highest fracture load but also a higher unrestorable failure rate.","PeriodicalId":16887,"journal":{"name":"Journal of prosthodontic research","volume":null,"pages":null},"PeriodicalIF":3.6,"publicationDate":"2024-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9570467","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}

引用次数: 0