• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>The Journal of Prosthetic Dentistry >Comparison between incisal embrasures of natural and prosthetically restored maxillary anterior teeth.
【24h】

Comparison between incisal embrasures of natural and prosthetically restored maxillary anterior teeth.

机译：天然和假体修复的上颌前牙的切牙痕迹之间的比较。

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

STATEMENT OF PROBLEM: The loss of one or more of the incisal embrasures may pose a problem in restoring missing tooth structure. Despite its acknowledged importance in dental esthetics, few researchers have investigated the esthetic impact of incisal embrasures. PURPOSE: The purpose of this study was to compare parameters of the incisal embrasures of natural maxillary anterior teeth (ND) with those of prosthetically restored maxillary anterior teeth (PRD) and to compare the resemblance of the prosthetic restoration to natural form. MATERIAL AND METHODS: Twenty gypsum casts of the maxillary anterior teeth (MAT) of patients made at the completion of their orthodontic treatment comprised the control group. The experimental group consisted of 20 gypsum casts of prosthetically restored maxillary anterior segments. Five incisal embrasures of each cast were digitally photographed under uniform, standardized conditions: the incisal embrasures between the canine and lateral incisor on each side, between the lateral and central incisors on each side, and between the 2 central incisors. The photographs were measured by image analyzing software (Bioquant Nova Prime). The parameters compared were: (1) the areas of the incisal embrasures in the natural and prosthetic casts (measured in mm(2)); (2) the areas of homological incisal embrasures in each of the groups; and (3) the degree of lateral symmetry of the natural casts as compared to the prosthetic casts. The results were subjected to 2-way ANOVA and Student t tests (alpha =.05). RESULTS: The total area of incisal embrasures of the PRD casts was smaller than the total area of those of the natural dentition casts (P=.005). The incisal embrasures of the PRD casts were smaller than the homological embrasures of the natural dentition casts (P<.01). Both groups demonstrated a lack of lateral symmetry (P<.001). The natural dentition casts demonstrated a greater asymmetry than the restored dentition casts (canine/lateral P<.045 and lateral/central P<.035). There was no significant difference in the sizes of the central incisal embrasures of the 2 groups. The corresponding incisal embrasure areas (ND versus PRD) were significantly different, except for the 2 central embrasures. CONCLUSIONS: Prosthetically restored dentition casts differed from natural dentition casts in 2 parameters: the area of the incisal embrasures and the degree of lateral symmetry.
机译：问题陈述：失去一个或多个切齿上的缝隙可能会在恢复缺失的牙齿结构方面造成问题。尽管其在牙科美学中的重要性已得到公认，但很少有研究者研究过切牙包埋的美学影响。目的：本研究的目的是比较自然的上颌前牙（ND）与修复后的上颌前牙（PRD）的切迹的参数，并比较修复体与自然形态的相似性。材料与方法：在完成正畸治疗后制成的患者的上颌前牙（MAT）的二十个石膏模型为对照组。实验组由20块石膏修复的上颌前节修复而成。在统一，标准化的条件下，对每个铸模的五个切齿进行数字化照相：在犬齿和侧切齿之间的切齿之间，每侧切齿和中央切齿之间以及在2个中心切齿之间。通过图像分析软件（Bioquant Nova Prime）测量照片。比较的参数为：（1）天然和假牙中的切牙孔区域（以mm（2）为单位）; （2）各组中的同源切牙区域; （3）天然假牙与假牙相比的横向对称度。对结果进行2通ANOVA和Student t检验（α= 0.05）。结果：珠三角牙龈切缘的总面积小于自然牙列牙的总面积（P = .005）。 PRD铸型的切齿比天然牙列铸型的同构齿小（P <.01）。两组均显示缺乏侧向对称性（P <.001）。天然牙列模型比恢复的牙列模型具有更大的不对称性（犬/外侧P <.045和外侧/中央P <.035）。两组中切牙中央切口的大小无明显差异。相应的切牙包埋区（ND与PRD）差异很大，除了2个中央包埋区。结论：修复后的牙列铸模与自然的牙列铸模在两个参数上有所不同：切齿的面积和侧向对称程度。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号