인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
DBpia AI
AI 에이전트
AI 아이디어
AI 리더
AI 뷰어
Citeasy
크롬 서지관리 다운로드
지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
피인용 0
초록·키워드
This study evaluated the 3-dimensional position and angulation of the maxillary second premolar germ according to the type of ectopic eruption of the maxillary first molar using cone beam computed tomography. A total of 105 patients were classified into three groups: Normal (fully erupted first molar without root resorption of the second primary molar), Reversible (ectopic eruption with root resorption that self-corrected), and Irreversible (impacted molar with persistent root resorption).
Angulation was measured in the sagittal and coronal planes. Distance and arch ratio were assessed in the axial and coronal views. In the sagittal plane, the mean angulation became progressively more distal from the Normal to the Irreversible group, showing significant differences between the Normal and both ectopic groups (p < 0.0001). In the coronal plane, buccal inclination increased toward the Irreversible group, with significant differences between the Normal and Irreversible groups (p < 0.0001). The coronal distance ratio decreased significantly across all groups, with pairwise differences showing statistical significance (p < 0.0001). In the axial plane, values were significantly lower in both ectopic groups than in the Normal group (p < 0.0001). No significant differences were observed in the arch ratio (p > 0.05). These findings suggest that ectopic eruption of the first molar induces progressive distal and buccal inclination and palatal displacement of the second premolar germ, even after self-correction.
본문·목차
인공지능 문자 인식 모델을 통해 추출된 텍스트로, 일부 오타나 오류가 포함될 수 있으나 지속적으로 개선 중입니다.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
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