光固化树脂材料充填上颌前牙过大间隙

摘要

背景：光固化树脂是一种新型材料，具有色泽美观、强度高、应用广泛、操作简便且价廉等特点。修复时不磨牙或少磨牙，患者乐于接受。　　目的：观察光固化树脂充填上颌前牙过大间隙的效果。　　方法：共收治32例患者，75个上颌大间隙，107颗牙齿；其中男15例，女17例；年龄21-52岁；牙位分别为双侧中切牙1个间隙，14例；双侧中切牙、左侧侧切牙、左尖牙3个间隙，3例；双侧中切牙、右侧侧切牙、右侧尖牙3个间隙，2例；左侧中切牙、侧切牙、尖牙和右侧中切牙、侧切牙4个间隙，3例；双侧中切牙和侧切牙3个间隙，6例；左侧中切牙、侧切牙和右侧中切牙、侧切牙、尖牙4个间隙，4例。均采用光固化树脂充填过大上颌前牙间隙。随访观察牙冠形态，密合度、颜色、磨损程度及松动度情况。　　结果与结论：随访3年，32例患者中修复成功17例，树脂修得的牙冠形态及密合度良好，修复体不松动脱落，无任何变色；修复基本成功9例，修复的牙冠形态及密合度欠佳，修复体不松动脱落，但在龈缘处和牙体接触处修复体有缺陷，有轻度变色；修复失败6例，牙冠形态及密合度较差，修复体松动或脱落，修复体严重变色，需要重新修复。%BACKGROUND:Light-cured resin is a new kind of material with beautiful color, high strength, wide range of applications, easy-to-use and inexpensive features. Patients are wil ing to accept it because of less or no grinding of the teeth. OBJECTIVE:To observe the effect of light-cured resin to fil the interdental space between maxil ary anterior teeth. METHODS:A total of 32 patients aged 21-52 years were enrol ed, 107 teeth with 75 oversized maxil ary spaces, including 15 males and 17 females. One space between bilateral central incisors was found in 14 cases;three spaces between bilateral central incisors, left lateral incisor, and left canine were found in three cases;three spaces between bilateral central incisors, right lateral incisor, and right canine were found in two cases;four spaces between left central incisor, left lateral incisor, left canine, right central incisor, and right lateral incisor were found in three cases;three spaces between bilateral central incisors and lateral incisors were found in six cases;four spaces between left central incisor, left lateral incisor, right central incisor, right lateral incisor, and right canine were found in four cases. Al the oversized maxil ary spaces were fil ed with light-cured resin. Then, crown morphology, adaptation, color, degree of wear and loosening were observed during fol ow-up. RESULTS AND CONCLUSION:After 3-year fol ow-up, 17 of 32 cases were successful in tooth repair:the crown morphology and tooth adaptation were good, and there was no prosthesis loosening or detachment and discoloration. The tooth space was repaired basical y in another nine cases:the crown morphology and tooth adaptation were not good enough, no prosthesis loosening or detachment was found, but there were some defects at the gingival margin and contact surface of teeth as wel as mild discoloration. Tooth repair failed in the other six cases with worse crown morphology and adaptation, prosthesis loosening or detachment, and severe discoloration, which need to be repaired again.