Horizontal and Vertical Dimensional Changes of Peri-implant Facial Bone Following Immediate Placement and Provisionalization of Maxillary Anterior Single Implants: A 1-Year Cone Beam Computed Tomography Study

Q3 · DentistryImpact Factor · 1.071

AutoresPhillip Roe; Joseph Y. K. Kan; Kitichai Rungcharassaeng; Joseph M. Caruso; Juan Mesquida; Jaime Lozada

Por qué importa

Este estudio de tomografía computarizada de haz cónico (CBCT) analizó las modificaciones dimensionales horizontales y verticales del hueso facial vestibular tras la colocación y provisionalización inmediata de implantes unitarios en el sector anterior maxilar. Las mediciones se realizaron inmediatamente después de la cirugía y al cabo de un año, evaluando el grosor del hueso vestibular a distintas alturas y la distancia vertical desde la plataforma del implante hasta el punto más coronal del hueso facial. Los resultados indican que se deben prever cambios en el tejido óseo peri-implantario, siendo la mayor alteración del grosor horizontal la observada a nivel de la plataforma del implante. Estos hallazgos son relevantes para planificar y predecir la reabsorción ósea postoperatoria, fundamental para el mantenimiento estético y funcional a largo plazo de las rehabilitaciones implantosoportadas.

Abstract original

This cone beam computed tomography study (CBCT) evaluated horizontal and vertical dimensional changes to the facial bone following maxillary anterior single immediate implant placement and provisionalization. CBCT scans taken immediately after (T1) and 1 year after surgery (T2) were evaluated. The midsagittal cut of each implant was identified, and measurements were made at predetermined levels. Horizontal facial bone thickness (HFBT) was measured at 0, 1, 2, 4, 6, 9, and 12 mm apical to the implant platform. Vertical facial bone level (VFBL) was the perpendicular distance from the implant platform (0) to the most coronal point of the facial bone. Measurements were recorded and changes between T1 and T2 were calculated. The data were analyzed statistically at a significance level of α = 0.05. CBCT scans of 21 patients were analyzed. At T2, the mean HFBT changes ranged from -1.23 to -0.08 mm at the seven different levels evaluated. The mean VFBL change was -0.82 mm. The HFBT changes at the 1- to 9-mm levels were not significantly different from one another, but they were significantly smaller than the change at the 0-mm level and significantly greater than the change at the 12-mm level. Significant positive correlations were observed only between horizontal and vertical changes and between horizontal change and initial VFBL at the implant platform. While the VFBL of eight implants (38%) was apical to the implant platform at T2, none was noted at T1. Dimensional changes to the peri-implant facial bone following maxillary anterior single implant placement and provisionalization should be expected. The greatest HFBT change was noted at the implant platform level, in part because HFBT change is correlated to the initial VFBL and the change in VFBL at that level.

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Autor Doctor&Cols

Juan Mesquida Escalas
Cirugía Oral e Implantología

Cómo citar

Roe P, Kan JYK, Rungcharassaeng K, Caruso JM, Mesquida J, Lozada J. Horizontal and Vertical Dimensional Changes of Peri-implant Facial Bone Following Immediate Placement and Provisionalization of Maxillary Anterior Single Implants: A 1-Year Cone Beam Computed Tomography Study. The International Journal of Oral & Maxillofacial Implants. 2012.