A comparative Evaluation of the Translucencies of Three Commercially Available Brands Of Translucent Zirconia Ceramic Systems with a Conventional Lithium Disilicate Ceramic System – An In-Vitro Study

The Journal of the Indian Prosthodontic Society Pub Date : 2020-12-01 DOI:10.4103/0972-4052.306345

M. Dubey

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Abstract

S18 The Journal of Indian Prosthodontic Society | Volume 20 | Supplement 1 | December 2020 Introduction: Smile zone mainly encompasses the teeth and gingiva. Aim of this paper is to determine visibility of maxillary teeth in males and females at superior and lateral lip mobility in a specific shape of smile zone. Methodology: 384 subjects of 18 to 40 years were selected. An image of each subject’s face was captured in resting and spontaneous smiling state under standardized condition. Smile zone shape, Lip mobility superiorly and laterally, number of maxillary teeth visibility, amount of maxillary anterior teeth visibility and the relationship of all these parameters in males and females were analyzed. Unpairedstudent t test, one-way ANOVA, Post-hoc, and Pearson chisquare tests were used for analysis. Result: More common smile zone shape was bow. 201 subjects were having the superior lip mobility in the range of 1-5mm and exposure of the right and left central incisors was 71.09 % and 71.23 %, Right and left lateral incisors was 79.33% and 79.77%, right and left canines was 67.18% and 73.91%. Ellipse smile zone was having maximum amount of exposure. Females were having maximum exposure of teeth. More common range of lateral lip mobility was 11-15 mm and maximum numbers of teeth were visible in straight smile zone shape. Conclusion: More common smile zone shape was bow. Superior and lateral lip mobility was 2-15mm and 4-30mm. Maximum amount of teeth exposure was seen in ellipse smile zone shape. More numbers of teeth were exposed in straight smile zone shape. Females were having maximum exposure both in lateral and superior lip mobility. DOI: 10.4103/0972-4052.306343 A study to evaluate the effectiveness of three different treatment modalities for management of temporo-mandibular joint disorders

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三种市售品牌的半透明氧化锆陶瓷系统与传统的二硅酸锂陶瓷系统的半透明性的比较评估-体外研究

S18印度口腔修复学会杂志2020年12月介绍:微笑区主要包括牙齿和牙龈。本文的目的是确定上颌牙齿的可见性在男性和女性在上唇和侧唇活动在特定形状的微笑区。方法:选取年龄在18 ~ 40岁之间的384名受试者。在标准化的条件下，采集每位受试者在休息和自发微笑状态下的面部图像。分析男性和女性微笑区形状、上侧唇活动度、上颌牙数量、上颌前牙数量以及这些参数之间的关系。采用非配对学生t检验、单因素方差分析、事后检验和皮尔逊方检验进行分析。结果:微笑区形状以弓形为主。201例唇部活动度在1 ~ 5mm范围内，左右中切牙外露率分别为71.09%和71.23%，左右侧切牙外露率分别为79.33%和79.77%，左右犬齿外露率分别为67.18%和73.91%。椭圆微笑区暴露量最大。女性的牙齿暴露程度最高。侧唇活动范围在11 ~ 15 mm之间较为常见，直笑区齿数最多。结论:微笑区形状以弓形为主。上唇和侧唇活度分别为2 ~ 15mm和4 ~ 30mm。露出牙齿最多的是椭圆微笑区形状。更多的牙齿暴露在直微笑区形状。女性在侧唇和上唇活动方面都有最大的暴露。DOI: 10.4103/0972-4052.306343一项评估三种不同治疗方式对颞下颌关节疾病管理有效性的研究

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The Journal of the Indian Prosthodontic Society

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