Jansson L, Ehnevid H, Lindskog S, Blomlöf L
Department of Oral Histology and Cell Biology, School of Dentistry, Karolinska Institutet, Sweden.
J Clin Periodontol. 1994 Oct;21(9):577-82. doi: 10.1111/j.1600-051x.1994.tb00746.x.
The purpose of the present investigation was to evaluate the influence of overhanging marginal restorations on periodontal status and whether any such influence is modified by the patient's oral hygiene level and degree of radiographic attachment loss. The investigation was conducted as a retrospective study on a consecutive referral population. Periodontal pockets at proximal sites with marginal overhangs were significantly deeper (0.42 mm) compared to sites with metal restorations without overhangs. This difference was larger (0.62 mm) for sites with radiographic attachment loss < or = 6 mm, while no significant difference was found for sites with radiographic attachment loss > 6 mm. In patients with a mean radiographic attachment loss < or = 5 mm, an overhanging restoration margin was associated with a significantly increased loss of radiographic attachment (0.66 mm). It was concluded that the influence of a marginal overhang on pocket depth and radiographic attachment decreases with increasing loss of periodontal attachment in periodontitis-prone patients. The effect on pocket depth of a marginal overhang may act synergistically, potentiating the effect of poor oral hygiene.
本研究的目的是评估悬突边缘修复体对牙周状况的影响，以及患者的口腔卫生水平和影像学附着丧失程度是否会改变这种影响。该研究是对连续转诊人群进行的回顾性研究。与没有悬突的金属修复体部位相比，有边缘悬突的邻面部位牙周袋明显更深（0.42毫米）。对于影像学附着丧失≤6毫米的部位，这种差异更大（0.62毫米），而对于影像学附着丧失>6毫米的部位，未发现显著差异。在平均影像学附着丧失≤5毫米的患者中，悬突修复边缘与影像学附着丧失显著增加（0.66毫米）相关。得出的结论是，在易患牙周炎的患者中，边缘悬突对牙周袋深度和影像学附着的影响随着牙周附着丧失的增加而减小。边缘悬突对牙周袋深度的影响可能具有协同作用，增强口腔卫生不良的影响。
