- 期刊
上顎前牙區多生牙之特性探討－106個手術案例之分析
The Characteristics of Premaxillary Supernumerary Teeth: 106 Surgical Cases Analysis
摘要
研究目的：本研究之目的為瞭解於台北榮總就診之患童上顎前牙區多生牙的特性，並與台灣及西方其它相關的研究結果作比較。 方法與對象：研究對象為於民國九十年至九十三年間於台北榮總兒童牙科就診的一百零六個兒童，年齡介於二歲到十五歲之間。其經臨床及X光片檢查後發現上顎前牙區有多生牙的存在，並於全身麻醉下經由手術將多生牙移除。 結果：研究結果顯示上顎前牙區多生牙發生的比率，男生約為女生的三倍，其中63%的病人只有一顆多生牙，而37%的病人有二顆多生牙。就多生牙的形態而言，80%的多生牙為圓錐狀，11%為結節狀，而似門牙狀的則有8%。就發生的部位而言，大部分的多生牙位於上顎正中門齒區，占95%，而約5%位於上顎中線處。就多生牙生長的方向而言，在一百四十五顆多生牙中，約有三成為正長，其中有14%已萌出；另外約有六成為倒長。98%的多生牙由顎側移除，只有1.4%由頰側移除。 結論：早期發現多生牙並加以移除，才能避免恆牙延遲萌發、門牙間產生縫隙等諸多後遺症的發生。為提早發現上顎前牙區之多生牙，應於病人就診時，照攝一張品質良好的上顎咬合片，以期提早發現，提早治療。
並列摘要
Purposes: The purposes of this study were to investigate the characteristics of premaxillary supernumerary teeth and to reviews the literatures. Methods: The study population consisted of 106 children who visited the section of Pediatric Dentistry at the Veterans General Hospital-Taipei from 2001 to 2004. The age of patients ranged from 2 to 15 years old. Supernumeraries were detected by clinical and radiographic examinations, and had been extracted with surgical intervention. Results: The results showed that of the 106 patients, males were affected more than females with a ratio of 3.2:1. Sixty-three percent of the patients had one supernumerary tooth, 37% had two supernumerary teeth. Ninety-five percent of the supernumerary teeth occurred in the central incisor region and 5% were located in the premaxillary midline. Most of the supernumeraries were conical shape (81%), followed by tuberculate shape (11%), and supplemental shape (8%). More than half of the supernumerary teeth were oriented inverted (58%), 30% in the normal vertical position, and 11% were transverse. Fourteen percent of normal vertical oriented supernumerary teeth were erupted.