The utility model discloses a gap maintainer, which comprises a U-shaped head for fixing and bonding the six-year-old teeth on the back of premature loss molars, a counterpart for counteracting the side of adjacent teeth on the front side of premature loss molars, and a connecting rod for connecting the U-shaped head and counterpart. A number of concave and convex points are arranged on the inner surface of the U-shaped head. The gap maintainer of the utility model uses a U-shaped head to bond with six-year-old teeth, and the back end of the U-shaped head is an opening, so that the gums covering the distal part of the six-year-old teeth need not be excluded or removed during installation; the U-shaped head matches the shape of the six-year-old teeth, and can be easily installed on the six-year-old teeth without removing part of the tooth tissue; after installation, the distal part of the six-year-old teeth will not form a bite with the jaw. Interference. This solves the problems of removing or removing gingiva, removing part of tooth tissue, forming occlusal interference and easily falling off when the existing gap maintainer is installed. It makes the installation of gap maintainer simpler, more comfortable and less harmful to children.
【技术实现步骤摘要】
间隙维持器
本技术涉及一种医疗器械,特别涉及一种儿童牙齿间隙保持器。
技术介绍
因口腔清洁未做好、家长监护不力、未及时至儿童口腔专科就诊等原因,龋齿在6-9岁儿童中发生率较高。儿童乳牙龋齿未及时治疗、往往进展较快,会引起乳磨牙提前脱落问题。为了维持乳磨牙早失留下的间隙,需要制作间隙维持器。通过间隙维持器将乳磨牙早失后留下的间隙保持起来,能防止邻牙向乳磨牙缺失部位倾斜、移位,从而保证原乳磨牙下方的继替恒牙能顺利萌出。否则将引起原乳磨牙下方的继替恒牙萌出间隙不足、错位萌出、甚至阻生。乳磨牙丧失后,医生往往选择第一恒磨牙作为固定间隙维持器的固位牙。第一恒磨牙是儿童6岁时萌出的第一颗恒磨牙,又称为六龄牙,其萌出高度往往不足,远中部分牙体在很长一段时间内处于被牙龈覆盖状态。现有的间隙维持器由牙齿套圈和通过焊接固定在牙齿套圈上的钢丝支撑组成,存在焊接部位脱落、扎伤儿童舌头等软组织的风险。安装时,牙齿套圈通常套在六龄牙上,钢丝支撑通常抵在与早失乳磨牙相邻的牙齿上,如早失乳磨牙为第二乳磨牙,则钢丝支撑便抵在第一乳磨牙的远中侧面上,若早失乳磨牙为第一和第二乳磨牙,则钢丝支撑便抵在乳尖牙的远中侧面上。当然若是第二乳磨牙早失,间隙维持器安装时,也可以是牙齿套圈固定套在第一乳磨牙上,钢丝支撑抵在六龄牙近中邻面上。现有的间隙保持器在安装时存在如下缺点:1、由于六龄牙的萌出高度不足,特别是远中部分的高度不足,使得远中部分往往处于被牙龈覆盖的状态。这便导致在将牙齿套圈套在六龄牙上时,需要将覆盖六龄牙远中部分的牙龈切除,而切除牙龈会给儿童造成较大痛苦。或采用排龈方式将需戴套圈的六龄牙远中 ...
【技术保护点】
1.一种间隙维持器,其特征在于:包括用于与早失乳磨牙后侧的六龄牙固定粘接的U形头、用于抵在早失乳磨牙的前侧相邻牙齿的侧面上的抵头、以及连接U形头与抵头的连杆,所述U形头的内侧面上设置有若干凹凸点。
【技术特征摘要】
1.一种间隙维持器,其特征在于:包括用于与早失乳磨牙后侧的六龄牙固定粘接的U形头、用于抵在早失乳磨牙的前侧相邻牙齿的侧面上的抵头、以及连接U形头与抵头的连杆,所述U形头的内侧面上...
【专利技术属性】
技术研发人员:胡波,宋锦璘,王金华,胡赟,
申请(专利权)人:重庆医科大学附属口腔医院,
类型:新型
国别省市:重庆,50
还没有人留言评论。发表了对其他浏览者有用的留言会获得科技券。