Influence of overhanging posterior tooth restorations on alveolar bone height in adults

Abstract

The aim of this radiographic investigation was to compare the approximal bone height adjacent to class II amalgam restorations with and without overhangs to the bone height adjacent to homologue intact tooth surfaces, and to determine the possible effect of age and sex on the relative amount of such bone resorption. The x-rays of 43 persons aged 27--45 years and 42 persons aged 46--64 years were examined. In the total material the average amount of bone loss increased with age and was 0.34 mm greater in men than in women. About 50% of all posterior tooth restorations had an overhang. A comparison between the mean heights of approximal bone adjacent to sufaces with an overhang and homologue intact surfaces showed a statistically significant difference. When equal comparisons were made separately in the younger and the older age groups, only the older group showed a similar difference at a statistically almost significant level. The effect of overhanging restorations thus seemed to be accentuated with age. When men and women were studied separately, only men showed statistically significant differences between the age groups. The investigation confirms earlier results that overhanging posterior restorations are associated with excessive marginal approximal bone loss.

Restoration techniques and marginal overhang in Class II composite resin restorations

“…From all studies dealing with marginal overhang most were related to amalgam restorations and also no distinction was made between a 'smooth' or a 'rough and uneven' overhang. [1][2][3][4][5][6][7][8][9][10] Therefore, results found in these studies may not be generally valid for composite resin restorations. Depending on the clinical appearance of the composite resin overhang, there might be a different approach for the possible treatment of it.…”

“…Epidemiological and clinical experimental studies have demonstrated close associations between such iatrogenic factors and the pathogenesis of local periodontal lesions. [1][2][3][4][5][6][7] However, all these studies have been performed in a time where only amalgam was placed and literature on the effect of composite resin overhang is scarce.…”

The correlation between the presence of dehiscence or fenestration and the severity of tooth attrition in contemporary dry Japanese adult skulls. Part I.

“…At the healthy human dentogingival junction, the alveolar bone level has been recognized to be about one millimeter apical from the CEJ when the most coronal junctional epithelium is located on the CEJ [20]. On the other hand, previous studies have reported that in radiographs, an apical interproximal bone level of more than 2 mm can be classified as a pathological condition [21][22][23][24][25]. Generally, a bone level within 2.5 mm from the CEJ on a dry skull has been reported to represent a condition free of periodontal disease [26].…”

Proximal Marginal Overhang of Composite Restorations in Relation to Placement Technique of Separation Rings

“…[1][2][3][4][5][6][7] The clinical relevance of a marginal overhang might depend on the size, shape, and clinical appearance (smooth or rough and bulky) of the restoration. Rough and bulky outlines or the presence of gross overhang might result in accumulation of plaque and irritation of the epithelial attachment and might require replacement or repair of the restoration.…”

“…Epidemiological and clinical experimental studies have demonstrated close associations between such iatrogenic factors and the pathogenesis of local periodontal lesions. [1][2][3][4][5][6][7] Despite all efforts and available techniques, placing a Class II composite restoration will result in various degrees of marginal overhang. [8][9][10][11] Circumferential matrix systems resulted in the least marginal overhang compared with sectional matrix systems, and the use of a stiffer matrix band resulted in significantly less marginal overhang compared with dead-soft matrix bands.…”