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Clin Implant Dent Relat Res. 2019 Feb;21(1):175-182. doi: 10.1111/cid.12668. Epub 2018 Nov 5.

Alveolar ridge preservation using an open membrane approach for sockets with bone deficiency: A randomized controlled clinical trial.

Author information

1
Department of Periodontology, Veterans Health Service Medical Center, Seoul, Republic of Korea.
2
Department of Periodontology, School of Dentistry, Kyung Hee University, Seoul, Republic of Korea.

Abstract

BACKGROUND:

Various approaches are used for alveolar ridge preservation (ARP); however, there is no standard method or material.

PURPOSE:

To investigate the effect of ARP with a dense polytetrafluoroethylene (d-PTFE) membrane and freeze-dried irradiated allogenic bone for sockets with bone deficiency.

MATERIALS AND METHODS:

Thirty-four patients (with sockets exhibiting ≥3 mm hard tissue loss in ≥1 walls) were randomized to undergo natural socket healing (control) or ARP with a d-PTFE membrane and freeze-dried irradiated allogenic bone (test group). After 4 months, horizontal and vertical ridge changes were measured using cone beam computed tomography.

RESULTS:

Ridge width at l mm below the ridge crest demonstrated significantly less change in the test group (median =2.3; Q1 = 0.6; Q3 = 4.3 mm) than in the control group (median =3.9; Q1 =2.6; Q3 = 7.8 mm; P = .021). There was no significant difference between the two groups in horizontal ridge changes at 3 and 5 mm below the crest or vertical changes (P > .05). Requirement for bone augmentation at implant placement was significantly reduced in the test group compared to the control group (P < .001).

CONCLUSION:

ARP with a d-PTFE membrane and freeze-dried irradiated allogenic bone substitute reduced horizontal bone resorption in sockets with bone deficiency.

KEYWORDS:

alveolar ridge preservation; bone resorption; dense polytetrafluoroethylene membrane; freeze-dried allogenic bone

PMID:
30394672
DOI:
10.1111/cid.12668

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