Issa Yousef N, Burhan Ahmad S, Nawaya Fehmieh R, Massouh Lama G
Department of Orthodontics, Damascus University, Damascus Syrian Arab Republic.
Department of Orthodontics, Damascus University, Damascus Syrian Arab Republic, e-mail:
J Contemp Dent Pract. 2017 Jan 1;18(1):16-22. doi: 10.5005/jp-journals-10024-1981.
The purpose of this study was to evaluate whether the open apex measurements of the lower teeth can be used for prediction of the pubertal growth spurt.
The study group consisted of 150 males and 142 females ranging in age from 10 to 16 years. A total of 292 panoramic and 292 hand-wrist radiographs were obtained and analyzed. The skeletal maturity was determined according to the skeletal maturity indicators (SMIs) developed by Fishman. The open apices measurements of the left lower teeth were made according to the method described by Cameriere.
The Spearman rank order correlation coefficient revealed a relationship between the skeletal maturity stages and the open apex measurements. These correlations ranged from 0.577 for the lower second premolar to 0.830 for the lower canine. The measurement of the left lower canine showed the highest correlation, so its relationship with the SMIs was further investigated. The measurements of 6.07 (or greater) indicated to SMI4, and 2.485 (or lesser) indicated to SMI7.
The skeletal maturity well related to the measurements of the open apices of the lower teeth. Lower canine open apex measurements could be used as an indicator of the SMI4 and SMI7.
The measurements of the open apices of the left lower canines from panoramic radiographs may be clinically useful as an indicator of the beginning and the ending of the pubertal growth period.
本研究的目的是评估下牙开放根尖测量是否可用于预测青春期生长突增。
研究组由150名男性和142名女性组成，年龄在10至16岁之间。共获取并分析了292张全景片和292张手部腕部X线片。根据Fishman制定的骨骼成熟指标（SMIs）确定骨骼成熟度。按照Cameriere描述的方法对左下牙的开放根尖进行测量。
Spearman等级相关系数显示骨骼成熟阶段与开放根尖测量之间存在关系。这些相关性范围从下第二前磨牙的0.577到下尖牙的0.830。左下尖牙的测量显示出最高的相关性，因此进一步研究了其与SMIs的关系。测量值6.07（或更高）表明为SMI4，2.485（或更低）表明为SMI7。
骨骼成熟度与下牙开放根尖的测量密切相关。下尖牙开放根尖测量可作为SMI4和SMI7的指标。
全景片中左下尖牙开放根尖的测量在临床上可能有助于作为青春期生长阶段开始和结束的指标。
