A Study of the Palato-Radicular Groove in Chinese Adults I. Prevalence, Location, Conformation and Symmetry

國人顎根溝的研究I. 發生率、位置、形態及對稱性

侯桂林(Guey-Lin Hou) ； 吳逸民(Yih-Min Wu) ； 蔡吉政(Chi-Cheng Tsai)

《臺灣齒科醫學會雜誌》 11卷2期 (1988/10) Pp. 349-354

摘要

顎根溝是一種牙齒得發育異常，這種異常通常容易形成牙菌斑囤積的環境，造成局部性牙齒周圍的組織病變。因此有關牙齒顎根溝的認識，尤其是顎根溝的形態、方向、位置、對稱性與延伸的深度對於已存在或潛伏性的牙周病灶問題的治療與診斷均有密切的關係。本研究乃檢查本院牙科門診101為患者，牙齒包括上顎側門齒、正中門齒及犬齒 ，共計606顆。鑑定患者牙齒顎根溝的存在與否。檢查時應用臨床探診、根尖X光片及視診並藉助放大鏡，並記錄年齡、性別、顎根溝的形態、位置、對稱型及深度。結果摘要如下：(1)101個患者中，其顎根溝的發生率是44.6%。(2)顎根溝在606顆牙齒的發生率是12.2%。(3)大部份的顎根溝事發生在上顎側門齒(10.1%)。(4)大部份的顎根溝位置在顎面正中區(43.2%)。(5)大部份的顎根溝的深度屬於淺溝。(6)罷部份牙齒的顎根溝均成左右對稱性存在。

並列摘要

”The palato-radicular groove (PRG) is defined as a developmental anomaIy which may predispose the dentition to local periodontal lesions by providing an environment favorable to retention of bacterial plaque. Knowledge of the PRGs in teeth, especially the determination of the shape, direction,location, symmetry and extention of the groove, is therefore necessary for the diagnosis and treatment of existing or potential periodontal problems.One hundred and one individuals were examined for presence or absence of PRGs in a total of 606 maxillary lateral incisors, central incisors and
canines. The methods used to diagnose the presence of a distinct PRG at or apical to the cementoenamel junction were clinical probing, radiography and inspection with the aid of an enlarging oral mirror. PRGs were recorded according to location, and termination, bilateral symmetry, in addition to the patient age and sex. The results are summarized as follows: 1) The prevalence of PRGs in the 101 individuals examined was 44.6% 2) Of the total 606 teeth examined 74 had PRGs giving a combined prevalence of 12.2%. 3) A majority of the PRGs were located. in maxillary .lateral incisors
(10.1%).4) Most of the PRGs lie in the midpalatal region (43.2%). 5)Most of the PRGs were classified as a shallow groove (50%). 6) Most of the PRGs in teeth were bilaterally (right and left) symmetrical (67.6%).”

並列關鍵字

palato-radicular groove