K S Jang1, S J Youn, Y S Kim. 1. Zesaeng Dental Hospital, Daejin University, Seoul, Korea. jkscdknu@unitel.co.kr
Abstract
STATEMENT OF PROBLEM: Titanium is a biocompatible material, but it is not widely used in clinical dentistry for conventional removable denture frameworks. Little research exists on its applicability. PURPOSE: This study compared the casting accuracy and roughness of titanium and cobalt-chromium denture frameworks. MATERIAL AND METHODS: Twenty Kennedy Class II, Division 1 removable partial denture frameworks were fabricated with commercially pure titanium (n = 10) and a cobalt-chromium alloy (n = 10). The casting accuracy of each framework was determined by visual, radiographic, and microscopic methods. The roughness of each polished framework surface was analyzed with atomic force microscopy. RESULTS: The clinical fit, porosities, and microporosities of both types of metal frameworks were qualitatively similar. The surface roughness of polished pure titanium and cobalt-chromium frameworks was 104.43 +/- 69.24 nm and 133.91 +/- 40.92 nm, respectively. This difference was not statistically significant (P >.05). CONCLUSION: The clinical fit, porosity, and surface roughness of the titanium and cobalt-chromium frameworks fabricated for this study were comparable.
STATEMENT OF PROBLEM: Titanium is a biocompatible material, but it is not widely used in clinical dentistry for conventional removable denture frameworks. Little research exists on its applicability. PURPOSE: This study compared the casting accuracy and roughness of titanium and cobalt-chromium denture frameworks. MATERIAL AND METHODS: Twenty Kennedy Class II, Division 1 removable partial denture frameworks were fabricated with commercially pure titanium (n = 10) and a cobalt-chromium alloy (n = 10). The casting accuracy of each framework was determined by visual, radiographic, and microscopic methods. The roughness of each polished framework surface was analyzed with atomic force microscopy. RESULTS: The clinical fit, porosities, and microporosities of both types of metal frameworks were qualitatively similar. The surface roughness of polished pure titanium and cobalt-chromium frameworks was 104.43 +/- 69.24 nm and 133.91 +/- 40.92 nm, respectively. This difference was not statistically significant (P >.05). CONCLUSION: The clinical fit, porosity, and surface roughness of the titanium and cobalt-chromium frameworks fabricated for this study were comparable.
Authors: Sicknan Soares da Rocha; Gelson Luis Adabo; Luis Geraldo Vaz; Guilherme Elias Pessanha Henriques Journal: J Mater Sci Mater Med Date: 2005-08 Impact factor: 3.896
Authors: Renata Cristina Silveira Rodrigues; Adriana Claudia Lapria Faria; Iara Augusta Orsi; Maria da Gloria Chiarello de Mattos; Ana Paula Macedo; Ricardo Faria Ribeiro Journal: J Appl Oral Sci Date: 2010 Sep-Oct Impact factor: 2.698