Alveolar bone height according to the anatomical relationship between the maxillary molar and sinus
최윤주, 김용현, 한상선, 정의원, 이채나, 이아리, 전국진,
소속 상세정보
최윤주 ( Choi Yoon-Joo ) - Yonsei University College of Dentistry Department of Oral and Maxillofacial Radiology
김용현 ( Kim Young-Hyun ) - Yonsei University College of Dentistry Department of Oral and Maxillofacial Radiology
한상선 ( Han Sang-Sun ) - Yonsei University College of Dentistry Department of Oral and Maxillofacial Radiology
정의원 ( Jung Ui-Won ) - Yonsei University College of Dentistry Department of Periodontics
이채나 ( Lee Che-Na ) - Yonsei University College of Dentistry Department of Oral and Maxillofacial Radiology
이아리 ( Lee A-Ri ) - Yonsei University College of Dentistry Department of Oral and Maxillofacial Radiology
전국진 ( Jeon Kug-Jin ) - Yonsei University College of Dentistry Department of Oral and Maxillofacial Radiology
Abstract
Purpose: The aim of this study was to investigate the available alveolar bone height between the maxillary molars and the sinus floor according to their anatomical relationship using cone-beam computed tomographic (CBCT) images.
Methods: A total of 752 maxillary first (M1) and second molars (M2) on CBCT scans of 188 patients were selected. First, each maxillary molar was categorized as type 1, 2, 3, or 4 according to the relationship of the molar root with the maxillary sinus floor. The frequency distribution of each type was analyzed. Second, the shortest vertical distance (VD) of each molar was measured from the furcation midpoints of the roots to the lowest point of the sinus floor by 2 observers. Intraclass correlation coefficients and the t-test were calculated for the VD measurements.
Results: For M1, type 3 was the most frequent, followed by type 2. For M2, type 3 was the most common, followed by type 1. The VD measurements of type 1 were 9.51±3.68 mm and 8.07±2.73 mm for M1 and M2, and those of type 3 were 3.70±1.52 mm and 4.03±1.53 mm for M1 and M2, respectively. The VD measurements of M2 were significantly higher in female patients than in male patients.
Conclusions: Type 3 was the most frequent anatomical relationship in the maxillary molars, and showed the lowest alveolar bone height. This information will help clinicians to prevent complications related to the maxillary sinus during maxillary molar treatment and to predict the available bone height for immediate implant planning.
키워드
Cone-beam computed tomography; Dental implants; Maxillary sinus; Molar
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