Intervenciones para el reemplazo de piezas dentarias faltantes: técnicas de aumento óseo para el tratamiento con implantes dentales
TABLAS Characteristics of included studies Study
Carpio 2000
Methods
Randomised, parallel group study (follow up to abutment connection; 6 months). There were no withdrawals.
Participants
Patients with bone dehiscences or fenestrations around implants at implant placement. Adults treated at the University of Buffalo, New York, USA. Patients were excluded if they were heavy smokers, required lateral ridge or sinus augmentation prior to implant placement, or suffered from diabetes, hyperparathyroidism, osteoporosis, severe liver or kidney condition, active sinusitis, cancer or using immunosupressive or corticosteroids, were or could have been pregnant, or had any addiction to drugs or alcohol. 48 patients enrolled (23 in the collagen group and 25 in the ePTEE group).
Interventions
Resorbable porcine-derived collagen barrier membrane (BioGide, Geistlich Pharmaceutical, Wolhusen, Switzerland) versus non-resorbable ePTFE barrier (Gore-Tex, WL Gore and Associates, Inc., Flagstone, USA). Both groups had a 50%:50% mixture of bovine anorganic bone (Bio-Oss, Geistlich Pharmaceutical, Wolhusen, Switzerland) and autogenous bone derived from the osteotomy site placed beneath the barrier. All implants were turned surface, screw-type, titanium (Implant Innovations Inc., West Palm Beach, Florida, USA). The barrier was stabilised with either 2 polylactic acid bioabsorbable pins (Osseofix, Implant Innovations Inc., or Resor-Pin, Geistlich Pharmaceutical, Wolhusen, Switzerland), the implant cover screw or the mucogingival flap.
Outcomes
Implant failure at abutment connection (6 months). Morbidity measures as implant exposure, wound dehiscence, and barrier exposure. These were undertaken at 2, 5, 7, 10, 15, 21, 28 days post-operatively and then monthly up to 6 months. The bone graft size was calculated as the difference in length, width and circumference of the bone defect around the implant measured at implant placement and 6 months later at the implant exposure surgery.
Notes Allocation concealment
A
Study
Chen in manuscript
Methods
3-year post-loading randomised, parallel group study. There were 8 drop outs at 3 years. 5 patients dropped out from the Bio-Oss + resorbable group and 3 patients from the Bio-Oss group.
Participants
Patients requiring immediate implant placement in 1 maxillary anterior or premolar tooth site. Adults treated at a private practice in Melbourne, Australia. Patients were excluded if there was an acute infection or suppuration at the planned implant site, clinical attachment loss of 5 mm or more on the buccal aspect, and if there were psychological or systemic contraindications. 10 patients enrolled in each group.
Interventions
Bovine anorganic bone (Bio-Oss, Geistlich Pharmaceutical, Wolhusen, Switzerland) versus Bio-Oss plus resorbable porcine-derived collagen barrier (Bio-Gide). Barriers were trimmed as required and fixed to the implants by the healing screw. Implants were not submerged and left to heal for 6 months. All Implants were ITI SLA (Institut Straumann AG, Waldenburg, Switzerland). All patients were rehabilitated with single implant supported crowns.
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