Nischal Muskaan, Gupta Teena, Mehra Manjul, Sadana Gunmeen
Department of Pediatric and Preventive Dentistry, Sri Guru Ram Das Institute of Dental Sciences and Research, Amritsar, Punjab, India.
Department of Pedodontics, Sri Guru Ram Das Dental College and Hospital, Amritsar, Punjab, India.
Int J Clin Pediatr Dent. 2020 Nov-Dec;13(6):622-629. doi: 10.5005/jp-journals-10005-1842.
The aim of this study was to evaluate the surface texture, anatomical form, marginal integrity, marginal discoloration, and secondary caries of three different types of crowns in primary anterior teeth at different time intervals of 3, 6, and 9 months.
Total 45 primary maxillary incisors were randomly selected and divided into three groups of 15 each: group I-strip crowns (Pedoform strip crowns, 3M, United States), group II-zirconia crown (kids-e-crown, India), and group III-luxa crown (DMG, Germany). All the full-coronal restorations were evaluated at 3, 6, and 9 months. The modified USPHS criteria were used to evaluate different parameters. Data were collected and the nonparametric test (Chi-square) was used to analyze the intergroup data.
Statistically nonsignificant difference was observed for most of the parameters except marginal integrity and secondary caries. Resin strip crowns showed maximum cases with distorted marginal integrity and secondary caries.
Zirconia crown performed best among the three full-coronal restorations. Luxa crown performed similar to zirconia crown. It can be used as an alternative economical esthetic full-coronal restoration for primary maxillary anterior incisors.
This study illustrates the advantage of the temporization material as a full-coronal restoration option in primary maxillary anterior teeth.
Nischal M, Gupta T, Mehra M, Clinical Comparison of Three Tooth-colored Full-coronal Restorations in Primary Maxillary Incisors. Int J Clin Pediatr Dent 2020;13(6):622-629.
本研究旨在评估三种不同类型的乳牙前牙冠在3个月、6个月和9个月的不同时间间隔下的表面纹理、解剖形态、边缘完整性、边缘变色及继发龋情况。
随机选取45颗上颌乳切牙，分为三组，每组15颗：第一组为带状冠（美国3M公司的Pedoform带状冠），第二组为氧化锆冠（印度kids - e - crown），第三组为luxa冠（德国DMG公司）。所有全冠修复体在3个月、6个月和9个月时进行评估。采用改良的美国公共卫生服务（USPHS）标准评估不同参数。收集数据并使用非参数检验（卡方检验）分析组间数据。
除边缘完整性和继发龋外，大多数参数在统计学上无显著差异。树脂带状冠出现边缘完整性扭曲和继发龋的情况最多。
在三种全冠修复体中，氧化锆冠表现最佳。luxa冠的表现与氧化锆冠相似。它可作为上颌乳前牙全冠修复的一种经济美观的替代选择。
本研究说明了临时修复材料作为上颌乳前牙全冠修复选择的优势。
Nischal M, Gupta T, Mehra M, 上颌乳切牙三种全冠修复体的临床比较。《国际临床儿科牙科学杂志》2020年；13(6):622 - 629。
