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Chinese Journal of Dental Research
Chin J Dent Res 22 (2019), No. 3     24. Sep. 2019
Chin J Dent Res 22 (2019), No. 3  (24.09.2019)

Page 181-188, doi:10.3290/j.cjdr.a43112, PubMed:31508606

Effect of Provisional Restorations with Ovate Pontics on Preservation of the Ridge after Tooth Extraction: Case Series
Yang, Yang / Cui, Feng Juan / Liu, Xiao Qiang / Pu, Ting Ting / Zhou, Jian Feng / Tan, Jian Guo
Objective: To evaluate the effect of provisional restorations using ovate pontics on the hard and soft tissues of the alveolar ridge after tooth extraction.
Methods: Patients with intact buccal bone after extraction of a maxillary incisor underwent a series of treatments. The protocol included tooth extraction and provisional restoration using ovate pontics. The outcomes were assessed 1, 3 and 6 months after the procedure, regarding changes in bone volume and soft tissue dimension.
Results: A total of 11 patients (6 female and 5 male) were treated using an ovate pontic provisional restoration after tooth extraction. After 6 months, bone loss at level 1, 3 and 5 mm below the most coronal section of the bone crest was 2.28 ± 0.53 mm, 1.51 ± 0.30 mm and 1.46 ± 0.41 mm, respectively. Changes in bone volume of these three levels were significantly lower (P < 0.01) than changes previously reported in the literature. The mesial and distal papillae recessed 0.47 ± 0.24 mm and 0.88 ± 0.57 mm, respectively, whereas the midfacial shrinkage was 0.86 ± 0.44 mm. The dimension of the ridge contour around the socket reduced mostly at 3 and 5 mm below the coronal section and the gingival mucosa, with values of 1.68 ± 0.48 mm and 1.61 ± 0.48 mm, respectively.
Conclusion: Using a provisional restoration with ovate pontics after tooth extraction may preserve the alveolar ridge by sustaining the soft tissue, in particular the gingival papilla.

Keywords: ovate pontics, alveolar ridge preservation, provisional restoration, gingiva recession, bone loss