International Journal of Prosthodontics and Restorative Dentistry

by firing cycles. 12The second is pressing, where the veneering layer is waxed on the zirconia framework, burned out, and pressed with appropriate veneering ceramic material, assuming that the single, high-temperature, firing cycle would improve the homogeneity and mechanical properties of the veneering layer. 12,13The third one is CAD-on, computer-aided design (CAD)/computer-aided manufacturing (CAM) systems that are recently being utilized to

Saraa Abdulateef

Hayam AlFallaj

Saeed Jamaan Alzahrani

Walaa Magdy Ahmed

Effect of Different Veneering Techniques on the Mechanical Failure of Tooth-supported Veneered Zirconia Crowns: A Systematic Review

不同饰面技术对牙支持式饰面氧化锆冠机械失败的影响：一项系统综述

EDITORIALbond strength of the PEEK with resin cement/layering composite resin.The bond strength in most of the studies increased when PEEK was treated with sulfuric acid.Most of the studies done were in vitro studies, so it's too early to come to any conclusion, so more clinical trials were needed to establish any fact on the bond strength of PEEK with resin. Orcid

Ramesh Chowdhary

Sunil Kumar Mishra

Current Evidence on the Bond Strength of Surface-treated Peek with Resin

表面处理聚醚醚酮与树脂粘结强度的当前证据

Case DesCriptionAn 8-year-old girl reported to a private clinic with a chief complaint of discolored primary teeth with a medical history of CEP and severe right sensorineural hearing loss.The patient had undergone a bone marrow transplant at the age of 1 year for CEP.On intraoral examination, delayed eruption of permanent teeth was seen, and reddish-black discoloration of all primary teeth and reddish-brown discoloration of 41 (Fig. 1).An orthopantomogram showed normal dentin, enamel, and pulp.The thickness of the enamel was approximately as same as that of the dentin (Fig. 2).Appropriate treatment for such cases would be esthetic

Pranjal Sharma

Shanthala B Mallikarjun

Sowndarya Gunasekaran

Gunther\'s Disease: Esthetic Management of Erythrodontia with 1-year Follow-up

Gunther氏病：红牙症的美学管理及1年随访

Purpose: To compare the fracture resistance of three-unit (3-unit) provisional fixed dental prostheses (FDPs) fabricated using conventional, computer-aided design and computer-aided manufacturing (CAD/CAM) and three-dimensional (3D) printing methods.Materials and methods: Mandibular right second premolar and second molar typodont teeth were prepared and a metal die was fabricated.Five specimens of each 3-unit FDP were fabricated using self-cure (conventional), with 3D printing and CAD/CAM techniques.Specimens were placed on the universal testing machine and subjected to an axial load.The maximum force which led to the fracture of the FDP was recorded.Tukey's test for pairwise comparison of fracture strength was used and a one-way analysis of variance (ANOVA) was used for intergroup.Results: Maximum fracture resistance was seen in the CAD/CAM group (2510.3N), followed by 3D printed (2182.9N), and least in the self-cure group (1940.9N).ANOVA for intergroup comparison showed a statistically significant difference in fracture resistance between the three groups (p < 0.001).A statistically significant difference in fracture resistance via post hoc Tukey's was seen in group I and group II (p < 0.001), and between group II and group III (p = 0.015).There was no significant difference found in between group I and group III (p > 0.05). Conclusion:Computer-aided design and computer-aided manufacturing milled and 3D printed 3-unit provisional FDP showed significantly better fracture resistance compared to the conventional FDP.Interim restorations fabricated using these advanced techniques provide stronger, more reliable, and conservatively produced provisional restorations.

Pragati Kaurani

Narendra Padiyar

Shweta Bhambhu

Shubhi Sahni

Comparison of Fracture Resistance of Three-unit Provisional Fixed Dental Prostheses Fabricated Using Conventional and Digital Methods

三种单位临时固定义齿采用传统和数字化方法制作的断裂阻力比较

Purpose:The purpose of this study was to find the effect of ultraviolet (UV) radiation on the osteoblastic activity of polyether ether ketone (PEEK).Materials and methods: Thirty samples of PEEK discs were made.The samples were grouped as group I (n = 15) PEEK with no treatment and group II (n = 15) PEEK modified by UV radiation.The experimental group was seeded with human osteoblastic sarcoma cells.The samples were incubated for 48 hours at 37 ± 1°C in a humid atmosphere at 5%.After 48 hours, 2.5% glutaraldehyde was applied to fix the seeded cells to the coverslips.The discs were seen under scanning electron microscopy to evaluate the colony formation and adhesion of osteoblastic cells on the PEEK discs.The observation made was tabulated and subjected to statistical analysis.Results: Noticeable adhesion of osteoblast was found in the UV-treated PEEK samples when compared to PEEK samples with no treatment.The cells in nontreated PEEK samples were less spread and showed few colonies.PEEK modified by UV radiation showed more noticeable osteoblast cells scattered all around the sample.The adhesion of the cells was better as compared to group I.The difference between the test and control group was statistically significant when analyzed by Fisher's exact test.Conclusion: PEEK modified with UV radiation showed more noticeable osteoblast cells scattered all around the sample.The adhesion of the cells in UV-treated samples was better as compared to no treatment.

Ramesh K Nadiger

Lekha K Pillai

Roseline D Meshramkar

Evaluation of Osteoblastic Activity of Polyether Ether Ketone Modified by Ultraviolet Radiation: An In Vitro Study

紫外线辐射改性聚醚醚酮成骨活性的评价：一项体外研究

Hossam M Bassiouny

Ehab M Atito

Wesam E Badr

Mohamed A Elmaroush

Mohamed A Quassem

Effect of Denture Base Material on the Peri-implant Stresses of Implant Supported Overdenture: An In Vitro Study

义齿基托材料对种植支持式覆盖义齿周围种植体应力的影响：一项体外研究

Kavitha Chavadapu

Chalapathi Rao Duggineni

Ravi Kumar Chitturi

Harilal Guguloth

Priyanka Golla

Sravanthi Khatravath

Evaluation of the Effect of Impregnation Methods on Flexural Strength of Polypropylene Fibers Reinforced Polymethyl Methacrylate Denture Base Material: An In Vitro Study

浸渍方法对聚丙烯纤维增强聚甲基丙烯酸甲酯义齿基托材料弯曲强度的影响评估：一项体外研究

Rahul Bhargava

Namitha Madhamshetty

Sandhya K Punia

Shilpi Kushwaha

Yogender Chaudhary

Comparative Assessment of Adhesive Bond Strength of 25% and 50% Propolis-modified Glass Ionomer Cement to Human Dentin: An In Vitro Study

25%和50%蜂胶改性玻璃离子水门汀与人类牙本质粘接强度的比较评估：一项体外研究

Divyabharathi Selvam

Shanmuganathan Natarajan

Madhan Kumar Seenivasan

Comparison of Retention of Clasps Fabricated with Cast Cobalt Chromium and Acetal Resin in Maxillary Obturator Prosthesis: An In Vitro Study

上颌义齿修复体中铸造钴铬合金与乙缩醛树脂卡环固位效果的比较：一项体外研究

Reshma Kulkarni

Anoop Nair

Mrunmayee Oak

Prema A

Vishwanath SK

Nagaranjani Prakash

Comparative Evaluation of the Shear Bond Strength and Color Stability of Two Commercially Available Intraoral Porcelain Repair Systems: An In Vitro Study

两种市售口内瓷修复系统剪切粘结强度和颜色稳定性的比较评价：体外研究

Publication Information	Publisher: Jaypee Brothers Medical Publishers (P) Ltd，Publishing cycle: ，Journal Type: journal，Open Access Journals: No
Basic data	Year of publication: 2019，Proportion of original research papers: ，Self Citation Rate:， Gold OA Rate:

International Journal of Prosthodontics and Restorative Dentistry

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