Servikal vertebraların büyüme ve olgunlaşmaları ile dentofasiyal yapıların büyümeleri arasındaki ilişkilerin longitudinal olarak incelenmesi

Abstract

77 During the puberal growth spurt, marked changes were observed in the bodies and inferior borders of the 2nd, 3rd and 4th cervical vertebrae. The body height of the cervical vertebrae was increased more than the body length. The rate of the increase in the height of the cervical vertebrae was peaked between the 3rd and 4th stages while the rate of the increase in the length was peaked between 2nd and 3rd stages. Additionally, the angles of the inferior borders decreased evidently in this period, because of the significant increase in the anterior and posterior heights of the vertebral bodies. These findings explain the differentiation of the cervical vertebrae from wedge-shaped to rectangular and consequently to square shape and also explain the increase of inferior border concavity. These evident morphological changes in the cervical vertebrae, make the method of the maturation of the cervical vertebrae useful in the determination of the stages of the puberal growth spurt. Comparison of the mean ages indicated that no significant differences were found between s2-S, s3-MP3cap, s4-DP3u, s5-MP3u and s6-Ru cervical vertebral and hand- wrist stages. Individual data demonstrated that the 1st stage was always seen before MP3cap between <PP2= and S, 2nd stage was generally occurred before MP3cap or with MP3cap, 3rd stage was generally occurred at the same time with MP3cap and sometimes just before or after this stage, 4th stage was generally seen after MP3cap and sometimes with MP3cap. The occurrence of the 5th and 6th stages were generally concentrated in MP3u and Ru respectively. Findings of the correlation analysis support the individual data. 2nd stage and MP3= and S stages, 3rd stage and S and MP3cap stages and 6th stage and Ru stage were statistically related. Thus, clinically, it was considered that the patient in the 2nd stage has not yet reached to the maximum puberal growth spurt while the patient in the 3rd stage should be in the maximum puberal growth spurt period. The patient in the 6th stage should be complete the growing process. The growth rate of the displacement of the maxilla and the mandible was peaked between 2nd and 3rd cervical vertebral stages, decreased after the 5th stage and terminated in the 6th stage. Maxillary incisors were displaced significantly during the 1st and 2nd cervical78 vertebral stages and the amount of displacement was decreased gradually until 6th stage. The rate of the displacement of the maxillary molars peaked between the 2nd and 3rd stages and gradually decreased until 6th stage. The vertical growth of the upper and lower dentoalveoler structures did not show a remarkable peak. In the determination of skeletal maturation, the use of the cervical vertebrae images would eliminate the need for the hand and wrist radiographs, and therefore, decrease the amount of radiation taken by the orthodontic patients. Keywords: cervical vertebrae, skeletal maturation, growth and development77 During the puberal growth spurt, marked changes were observed in the bodies and inferior borders of the 2nd, 3rd and 4th cervical vertebrae. The body height of the cervical vertebrae was increased more than the body length. The rate of the increase in the height of the cervical vertebrae was peaked between the 3rd and 4th stages while the rate of the increase in the length was peaked between 2nd and 3rd stages. Additionally, the angles of the inferior borders decreased evidently in this period, because of the significant increase in the anterior and posterior heights of the vertebral bodies. These findings explain the differentiation of the cervical vertebrae from wedge-shaped to rectangular and consequently to square shape and also explain the increase of inferior border concavity. These evident morphological changes in the cervical vertebrae, make the method of the maturation of the cervical vertebrae useful in the determination of the stages of the puberal growth spurt. Comparison of the mean ages indicated that no significant differences were found between s2-S, s3-MP3cap, s4-DP3u, s5-MP3u and s6-Ru cervical vertebral and hand- wrist stages. Individual data demonstrated that the 1st stage was always seen before MP3cap between <PP2= and S, 2nd stage was generally occurred before MP3cap or with MP3cap, 3rd stage was generally occurred at the same time with MP3cap and sometimes just before or after this stage, 4th stage was generally seen after MP3cap and sometimes with MP3cap. The occurrence of the 5th and 6th stages were generally concentrated in MP3u and Ru respectively. Findings of the correlation analysis support the individual data. 2nd stage and MP3= and S stages, 3rd stage and S and MP3cap stages and 6th stage and Ru stage were statistically related. Thus, clinically, it was considered that the patient in the 2nd stage has not yet reached to the maximum puberal growth spurt while the patient in the 3rd stage should be in the maximum puberal growth spurt period. The patient in the 6th stage should be complete the growing process. The growth rate of the displacement of the maxilla and the mandible was peaked between 2nd and 3rd cervical vertebral stages, decreased after the 5th stage and terminated in the 6th stage. Maxillary incisors were displaced significantly during the 1st and 2nd cervical

78 vertebral stages and the amount of displacement was decreased gradually until 6th stage. The rate of the displacement of the maxillary molars peaked between the 2nd and 3rd stages and gradually decreased until 6th stage. The vertical growth of the upper and lower dentoalveoler structures did not show a remarkable peak. In the determination of skeletal maturation, the use of the cervical vertebrae images would eliminate the need for the hand and wrist radiographs, and therefore, decrease the amount of radiation taken by the orthodontic patients. Keywords: cervical vertebrae, skeletal maturation, growth and development77 During the puberal growth spurt, marked changes were observed in the bodies and inferior borders of the 2nd, 3rd and 4th cervical vertebrae. The body height of the cervical vertebrae was increased more than the body length. The rate of the increase in the height of the cervical vertebrae was peaked between the 3rd and 4th stages while the rate of the increase in the length was peaked between 2nd and 3rd stages. Additionally, the angles of the inferior borders decreased evidently in this period, because of the significant increase in the anterior and posterior heights of the vertebral bodies. These findings explain the differentiation of the cervical vertebrae from wedge-shaped to rectangular and consequently to square shape and also explain the increase of inferior border concavity. These evident morphological changes in the cervical vertebrae, make the method of the maturation of the cervical vertebrae useful in the determination of the stages of the puberal growth spurt. Comparison of the mean ages indicated that no significant differences were found between s2-S, s3-MP3cap, s4-DP3u, s5-MP3u and s6-Ru cervical vertebral and hand- wrist stages. Individual data demonstrated that the 1st stage was always seen before MP3cap between <PP2= and S, 2nd stage was generally occurred before MP3cap or with MP3cap, 3rd stage was generally occurred at the same time with MP3cap and sometimes just before or after this stage, 4th stage was generally seen after MP3cap and sometimes with MP3cap. The occurrence of the 5th and 6th stages were generally concentrated in MP3u and Ru respectively. Findings of the correlation analysis support the individual data. 2nd stage and MP3= and S stages, 3rd stage and S and MP3cap stages and 6th stage and Ru stage were statistically related. Thus, clinically, it was considered that the patient in the 2nd stage has not yet reached to the maximum puberal growth spurt while the patient in the 3rd stage should be in the maximum puberal growth spurt period. The patient in the 6th stage should be complete the growing process. The growth rate of the displacement of the maxilla and the mandible was peaked between 2nd and 3rd cervical vertebral stages, decreased after the 5th stage and terminated in the 6th stage. Maxillary incisors were displaced significantly during the 1st and 2nd cervical78 vertebral stages and the amount of displacement was decreased gradually until 6th stage. The rate of the displacement of the maxillary molars peaked between the 2nd and 3rd stages and gradually decreased until 6th stage. The vertical growth of the upper and lower dentoalveoler structures did not show a remarkable peak. In the determination of skeletal maturation, the use of the cervical vertebrae images would eliminate the need for the hand and wrist radiographs, and therefore, decrease the amount of radiation taken by the orthodontic patients. Keywords: cervical vertebrae, skeletal maturation, growth and development