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Influence of wound closure on volume stability with the application of different GBR materials: an in vitro cone-beam computed tomographic study
Journal of Periodontal & Implant Science ; : 14-24, 2019.
Artículo en Inglés | WPRIM | ID: wpr-766090
ABSTRACT

PURPOSE:

To assess the influence of using different combinations of guided bone regeneration (GBR) materials on volume changes after wound closure at peri-implant dehiscence defects.

METHODS:

In 5 pig mandibles, standardized bone defects were created and implants were centrally placed. The defects were augmented using different combinations of GBR materials xenogeneic granulate and collagen membrane (group 1, n=10), xenogeneic granulate and alloplastic membrane (group 2, n=10), alloplastic granulates and alloplastic membrane (group 3, n=10). The horizontal thickness was assessed using cone-beam computed tomography before and after suturing. Measurements were performed at the implant shoulder (HT0) and at 1 mm (HT1) and 2 mm (HT2) below. The data were statistically analysed using the Wilcoxon signed-rank test to evaluate within-group differences. Bonferroni correction was applied when calculating statistical significance between the groups.

RESULTS:

The mean horizontal thickness before suturing was 2.55±0.53 mm (group 1), 1.94±0.56 mm (group 2), and 2.49±0.73 mm (group 3). Post-suturing, the values were 1.47±0.31 mm (group 1), 1.77±0.27 mm (group 2), and 2.00±0.48 mm (group 3). All groups demonstrated a loss of horizontal dimension. Intragroup changes exhibited significant differences in group 1 (P < 0.001) and group 3 (P < 0.01). Intergroup comparisons revealed statistically significant differences of the relative changes between groups 1 and 2 (P=0.033) and groups 1 and 3 (P=0.015).

CONCLUSIONS:

Volume change after wound closure was minimized by using an alloplastic membrane. The stability of the augmented horizontal thickness was most ensured by using this type of membrane irrespective of the bone substitute material used for membrane support.
Asunto(s)

Texto completo: Disponible Índice: WPRIM (Pacífico Occidental) Asunto principal: Hombro / Heridas y Lesiones / Regeneración Ósea / Técnicas In Vitro / Colágeno / Sustitutos de Huesos / Tomografía Computarizada de Haz Cónico / Aumento de la Cresta Alveolar / Mandíbula / Membranas Idioma: Inglés Revista: Journal of Periodontal & Implant Science Año: 2019 Tipo del documento: Artículo

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Texto completo: Disponible Índice: WPRIM (Pacífico Occidental) Asunto principal: Hombro / Heridas y Lesiones / Regeneración Ósea / Técnicas In Vitro / Colágeno / Sustitutos de Huesos / Tomografía Computarizada de Haz Cónico / Aumento de la Cresta Alveolar / Mandíbula / Membranas Idioma: Inglés Revista: Journal of Periodontal & Implant Science Año: 2019 Tipo del documento: Artículo