小臼齒及第一大臼齒拔齒以治療上顎或上下顎前突－病例的探討

The Treatment of Severe Maxillary Protrusion or Bimaxillary

李豐志(Fung-Chih Lee) ； 張龍美(Lung-Mei Chang)

《臺灣口腔醫學會雜誌》 15卷2期 (1999/12) Pp. 250-266

摘要

一般矯正治療，對於齒槽骨和牙齒大小長度總和的不調和或上下顎骨骨骼性大小、位置不對稱，其處置原則通常都以上下顎第一小臼齒或第二小臼齒等４齒做為拔除對象來進行矯正治療。但有時金有上下小臼齒之拔除並不能得到良好的結果。此時如增拔上下第一大臼齒，則可使臼齒區域的近遠心關係及病人側貌得到良好的改善。此篇文章的主要目的即以骨骼性或齒槽性之嚴重上顎或上下顎前突病例，在拔除第一小臼齒矯正處置後，因必要再拔除大臼齒繼續處置，最後得一良好側貌的報告。

關鍵字

小臼齒拔除 ； 大臼齒拔除 ； 上顎前突 ； 上下顎前突

並列摘要

For an orthodontic case with the discrepancy of the discoordination between the length of palate bone and tooth size or for a case with skeletal discrepancy of the unsymmetry upper and lower jaw in their size and position, the most common treatment is to extract the upper ahd lower first or the second premolar. But in some special cases olny four first premolar or two first premolar: two 2nd premolar extraction cannot lead to a good result.In these case, another four first molars extraction is a good choice to reach a good mesial and distal relationship between upper and lower molar area and get a good profile.This article is a report of sever maxillary protrusion or bimaxillary protrusion cases. They had four first premolar extraction, but the outcomes were not so satisfied. So four first molars were extracted
later, and this contributed to a good profile.

並列關鍵字

premolar extraction maxillary protrusion ； bimaxilJary protrusion