Korean J Orthod.  2016 Nov;46(6):379-385. 10.4041/kjod.2016.46.6.379.

Effect of slow forced eruption on the vertical levels of the interproximal bone and papilla and the width of the alveolar ridge

• Kwon EY
• Lee JY
• Choi J

• KMID: 2426682
• DOI: http://doi.org/10.4041/kjod.2016.46.6.379

Abstract

OBJECTIVE
Forced eruption has been proposed for the reconstruction of deficient bone and soft tissue. The aim of this study was to examine the changes in the alveolar ridge width and the vertical levels of the interproximal bone and papilla following forced eruption.
METHODS
Patients whose hopeless maxillary anterior teeth were expected to undergo severe bone resorption and soft tissue recession upon extraction were recruited. In addition, patients whose maxillary anterior teeth required forced eruption for restoration due to tooth fracture or dental caries were included. Before and after forced eruption, the interproximal bone height was measured by radiographic analysis, and changes in the alveolar ridge width and the interproximal papilla height were measured with an acrylic stent.
RESULTS
This prospective study demonstrated that the levels of the interproximal alveolar bone and papilla were significantly increased by 1.36 mm and 1.09 mm, respectively, in the vertical direction. However, the alveolar ridge width was significantly reduced by an average of 0.67 mm in the buccolingual direction. The changes in the level of the interproximal alveolar bone and papilla were positively correlated.
CONCLUSIONS
Although the levels of the interproximal bone and papilla were significantly increased, the alveolar ridge width was significantly decreased following forced eruption. There was a modest positive and significant correlation between the changes in the height of the interproximal alveolar bone and the papilla. Based on our findings, modification of vertical forced eruption should be considered when augmentation of the alveolar ridge width is required.

Keyword

Orthodontic extrusion; Tooth movement

MeSH Terms

Alveolar Process*
Bone Resorption
Dental Caries
Humans
Orthodontic Extrusion*
Prospective Studies
Stents
Tooth
Tooth Fractures
Tooth Movement

Figure

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  Figure 1 Schematic radiographic illustration demonstrating the measurement of interproximal alveolar bone height. Horizontal bar represents the tangential line drawn from the wire in the acrylic stent and used as a reference point.

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  Figure 2 Photographic images of maxillary anterior teeth before and after the forced eruption using orthodontic appliances. Marginal and interproximal soft tissue can be seen creeping toward the incisal edge (arrows).

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  Figure 3 Schematic drawings demonstrating the changes of the interproximal alveolar bone height (A), papilla height (B), and alveolar ridge width (C) before and after the forced eruption.

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