An analysis on the factors responsible for relative position of interproximal papilla in healthy subjects
김주희, 조윤정, 이주연, 김성조, 최점일,
소속 상세정보
김주희 ( Kim Joo-Hee ) - Pusan National University College of Dentistry Department of Periodontology
조윤정 ( Cho Yun-Jung ) - Pusan National University School of Dentistry Department of Periodontology
이주연 ( Lee Ju-Youn ) - Pusan National University School of Dentistry Department of Periodontology
김성조 ( Kim Sung-Jo ) - Pusan National University School of Dentistry Department of Periodontology
최점일 ( Choi Jeom-Il ) - Pusan National University School of Dentistry Department of Periodontology
KMID : 0363020130430040160
Abstract
Purpose: This study examined the factors that can be associated with the appearance of the interproximal papilla.
Methods: One hundred and forty-seven healthy interproximal papillae between the maxillary central incisors were examined. For each subject, a digital photograph and periapical radiograph of the interdental embrasure were taken using a 1-mm grid metal piece. The following parameters were recorded: the amount of recession of the interproximal papilla, contact point-bone crest distance, contact point-cemento-enamel junction (CEJ) distance, CEJ-bone crest distance, inter-radicular distance, tooth shape, embrasure space size, interproximal contact area, gingival biotype, papilla height, and papilla tip form.
Results: The amount of recession of the interproximal papilla was associated with the following: 1) increase in contact point-bone crest, contact point-CEJ, and CEJ-bone crest distance; 2) increase in the inter-radicular distance; 3) triangular tooth shape; 4) decrease in the interproximal contact area length; 5) increase in the embrasure space size; and 6) flat papilla tip form. On the other hand, the amount of gingival recession was not associated with the gingival biotype or papilla height. In the triangular tooth shape, the contact point-bone crest distance and inter-radicular distance were longer, the interproximal contact area length was shorter, and the embrasure space size was larger. The papilla tip form became flatter with increasing inter-radicular distance and CEJ-bone crest distance.
Conclusions: The relative position of the interproximal papilla in healthy subjects was associated with the multiple factors and each factor was related to the others. A triangular tooth shape carries a higher risk of recession of the interproximal papilla because the proximal contact point is positioned more incisally and the bone crest is positioned more apically. This results in an increase in recession of the interproximal papilla and flat papilla tip form.
키워드
Gingiva ; Gingival recession
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