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    Craniomandibular Asymmetry Evaluation of Patients wit h Eruption Disturbances of Second Molar Teeth
    (Galenos Publ House, 2022) Akbulut, Ayse Selenge; Soganci, Ahmet Ertan
    Objective The aim of this study was to evaluate craniomandihular asymmetry in patients with unilateral eruption disturbances of permanent second molar teeth. Methods: Fifty-two patients showing unilateral ruption distill ha nces (delayed eruption and impaction) of permanent second molar teeth were included in the study group. Thirty patients with normally erupted second molar teeth were included in the control group. The gonial angle, length of condyle head, length of condyle neck, ramus height, corpus length, and angles between facial skeletal midline and transversal lines formed by connection of some important anatomical points on both sides were measured on orthopantornograms. Asymmetry indices were calculated for each parameter. Paired t-test was used in each group separately when comparing both sides of the face. Unpaired t-test was used when comparing study group and control group with regard to asymmetry index parameters. Results: In study group; increases in gonial angle, length of condyle head, and ramus height were observed on the eruption disturbance side compared to the normally erupted side (p<0.05). Angles between facial skeletal midline and three separate lines formed by connection of articular eminence points, sigmoid notches, and gonion points were significantly higher on the normally erupted side. In control group, there was no statistically significant difference between both sides of the face. All asymmetry index parameters were showing statistically significant differences between study and control groups. Conclusion: Through this retrospective study, eruption disturbances of permanent second molars could be associated with craniomandibular asymmetry.
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    Craniomandibular Asymmetry Evaluation of Patients wit h Eruption Disturbances of Second Molar Teeth
    (Galenos Publ House, 2022) Akbulut, Ayse Selenge; Soganci, Ahmet Ertan
    Objective The aim of this study was to evaluate craniomandihular asymmetry in patients with unilateral eruption disturbances of permanent second molar teeth. Methods: Fifty-two patients showing unilateral ruption distill ha nces (delayed eruption and impaction) of permanent second molar teeth were included in the study group. Thirty patients with normally erupted second molar teeth were included in the control group. The gonial angle, length of condyle head, length of condyle neck, ramus height, corpus length, and angles between facial skeletal midline and transversal lines formed by connection of some important anatomical points on both sides were measured on orthopantornograms. Asymmetry indices were calculated for each parameter. Paired t-test was used in each group separately when comparing both sides of the face. Unpaired t-test was used when comparing study group and control group with regard to asymmetry index parameters. Results: In study group; increases in gonial angle, length of condyle head, and ramus height were observed on the eruption disturbance side compared to the normally erupted side (p<0.05). Angles between facial skeletal midline and three separate lines formed by connection of articular eminence points, sigmoid notches, and gonion points were significantly higher on the normally erupted side. In control group, there was no statistically significant difference between both sides of the face. All asymmetry index parameters were showing statistically significant differences between study and control groups. Conclusion: Through this retrospective study, eruption disturbances of permanent second molars could be associated with craniomandibular asymmetry.
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    A novel method for measuring tooth angulation in permanent mandibular second molars with delayed tooth eruption
    (Sage Publications Ltd, 2021) Soganci, Ahmet Ertan; Akbulut, Ayse Selenge; Sahin, Gokcen
    Objective: To investigate the effect of angulation of permanent mandibular second molars (MM2) on eruption problems and investigate a new method of measuring MM2 angulation for the diagnosis and evaluation of delayed tooth eruption (DTE) for easy use in dental practice. Design: Retrospective study. Setting: Department of Orthodontics, Necmettin Erbakan University. Participants: A total of 98 patients aged 9-18 years. Methods: Patients with 64 permanent MM2s with delayed eruption problems were included in the study group. The control group consisted of patients with 83 normally erupted teeth. In addition, a sub-group, consisting of 23 patients showing unilaterally delayed eruption of the same teeth, was set as a split-mouth group. All patients with unilateral delayed eruption of second molar teeth were selected from the study group to form the sub-group. Angulations of permanent MM2s were measured on panoramic radiographs with two measurement methods: (1) a new method; and (2) a previously accepted method. The comparison of the study and control groups was performed by Mann-Whitney U-test and the split-mouth group was analysed with the paired t-test. The P value was set at 0.05 for statistical significance. Results: Measurements of the tooth angulation values of the study group were significantly higher than in the control group for both measurement methods (P < 0.001). In addition, in the split-mouth group, angulation values of delayed eruption side were significantly higher than the erupted side (P < 0.001). Conclusion: Increased angulations of permanent MM2s could be associated with delayed eruption problems of these teeth. This new method could be useful in clinical dentistry to determine the eruption evaluation of lower second molars.