Evaluation of impacted mandibular third molars by panoramic radiography.

ISRN dentistry Pub Date : 2011-01-01 Epub Date: 2010-09-26 DOI:10.5402/2011/406714
Siddharth Gupta, Rahul R Bhowate, Nitin Nigam, Sonal Saxena
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引用次数: 55

Abstract

Objective. The study was to evaluate impacted mandibular third molars (IM3M) for their angulation, level of eruption, third molar space and relation of inferior alveolar canal with their roots. Methods. Total 988 IM3M were studied in 578 individuals of age 18 years and above, dividing them into three groups i.e. symptomatic, asymptomatic and radiographic only. Individuals were also divided according to age, sex and side of IM3M (right or left). Panoramic radiographs were obtained after written consent and traced. ℵ(2)-test was applied to check inter-group and intra-group significance. Result. Out of 578 individuals 307 (53.11%) were males and 271 (46.89%) females. Maximum number of IM3M were in 18-27 years age group (398 i.e. 68.89%). Out of 988 IM3M, 39.93% were vertically placed. 61.84% IM3M were found at level A. Class II (79.65%) was the most common relation for third molar space. Notching (12.55%) was most common true inferior alveolar canal and IM3M root relation whereas superimposed (41.80%) was most common false inferior alveolar canal and IM3M root relation. For all the criteria significant inter-group difference was found (considering P < .05) and intra-group difference was non significant. Conclusion and significance. Panoramic radiographs can be used as reliable investigation for evaluation of IM3M.

Abstract Image

下颌阻生第三磨牙的全景x线摄影评价。
目标。本研究评估下颌阻生第三磨牙(IM3M)的角度、出牙水平、第三磨牙间隙及下牙槽管与牙根的关系。方法。在578名18岁及以上的个体中研究了988例IM3M,将其分为三组,即有症状组、无症状组和仅影像学组。个体也根据年龄、性别和IM3M的侧面(右或左)进行了划分。经书面同意后拍摄全景x线片并进行追踪。采用χ 2检验检验组间和组内显著性。结果。578只中雄性307只(53.11%),雌性271只(46.89%)。18 ~ 27岁年龄组IM3M数量最多(398例,占68.89%)。988个IM3M中,39.93%垂直放置。在第三磨牙间隙,ⅱ类(79.65%)最为常见。切槽型(12.55%)和叠加型(41.80%)是最常见的假下牙槽管和IM3M根关系。各组间差异有统计学意义(P < 0.05),组内差异无统计学意义。结论及意义。全景x线片可作为评估IM3M的可靠调查。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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