|
In dentistry, Ante's law refers to a group of proposals related to crown-to-root ratio put forth by Irwin H. Ante〔Lovely M. ''Review of Fixed Partial Dentures'' Jaypee Brothers Medical Publishers, 2006. page 170.〕 in a thesis paper he wrote in 1926.〔Ante IH. The fundamental principles of abutments. ''Michigan State Dental Society Bulletin'' 1926;8:14-23〕 Ante's law postulated that: :"''the total periodontal membrane area of the abutment teeth must equal or exceed that of the teeth to be replaced''." Working off of this premise, later claims were made that: :"''the length of the periodontal membrane attachment of the abutment tooth should be at least one half to two thirds of that of its normal root attachment''".〔Tylman SD, Tylman SG. ''Theory and Practice of Crown and Bridge Prosthodontics'' 4th Ed. St. Louis: CV Mosby, 1960〕 Because of these largely unsubstantiated, empirical concepts, many teeth were subsequently excluded from suitability as an abutment for fixed partial dentures and double abutments became a popular means of complying with Ante's law. Long-term clinical trials failed to provide evidence for Ante's so called "law" and as such, it can be concluded that Ante's law with respect to teeth has been refuted.〔Lulic M, Brägger U, Lang NP, et al. Ante’s (1926) law revisited: a systematic review on survival rates and complications of fixed dental prostheses (FDPs) on severely reduced periodontal tissue support. ''Clin Oral Implants Res'' 2007;18(suppl 3):63-72〕〔Greenstein G, Cavallaro JS. Importance of crown to root and crown to implant ratios. ''Dentistry Today'' (Course number 135, 3/1/2011)〕 ==References== 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Ante's law」の詳細全文を読む スポンサード リンク
|