Comparison of allografts and xenografts used for alveolar ridge preservation. A clinical and histomorphometric RCT in humans.
Clin Implant Dent Relat Res
; 19(4): 608-615, 2017 Aug.
Article
em En
| MEDLINE
| ID: mdl-28466494
BACKGROUND: Several types of bone grafts are used in ridge preservation procedures. PURPOSE: To compare the healing of allografts and xenografts applied for alveolar ridge preservation. MATERIALS AND METHODS: Twenty volunteers in need of extraction of a single-rooted tooth prior to implant installation were randomized into two groups. One group received a deproteinized cancellous bovine bone xenograft embedded in a 10% collagen matrix and the other a demineralized freeze-dried cortical bone allograft. A collagen membrane was used to cover the grafts, flaps were sutured. At baseline and 6 months later, clinical measurements including vertical and horizontal bone dimensions were taken. Histomorphometric analysis was performed. RESULTS: Both groups showed shrinkage of bone dimensions. At mesial, center and distal sites, the vertical changes in dimension were -0.6, 0.5, and -0.1 mm for the allograft and -1.1, -0.4, and -0.9 mm for the xenograft. The horizontal changes in dimensions were -1.4 mm for the allograft and -2.6 mm for the xenograft. New bone and residual graft material were 25.5 ± 10.1% and 33.8 ± 9.4% at the allograft and 35.3 ± 16.8% and 22.2 ± 13.4% at the xenograft sites. None of the differences was statistically significant. CONCLUSION: Both grafting materials are suitable for the preservation of the alveolar ridge.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Transplante Ósseo
/
Aumento do Rebordo Alveolar
Tipo de estudo:
Clinical_trials
Limite:
Adult
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Animals
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Female
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Humans
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Male
Idioma:
En
Revista:
Clin Implant Dent Relat Res
Assunto da revista:
ODONTOLOGIA
Ano de publicação:
2017
Tipo de documento:
Article
País de afiliação:
Colômbia
País de publicação:
Estados Unidos