Clinical and radiographic evaluation of copolymerized polyactic/polyglycolic acids [PLA - PGA] as a bone filler in combination with acellular dermal matrix graft around immediate implants

ABSTRACT

This study was conducted to evaluate clinically and radiographically the use of acellular dermal matrix allograft [alloderm] in combination with PLA -PGA [Fisiograft] in management of osseous defects around seven immediate dental implants in the maxillary anterior region. Patients were seeking treatment with implants for their hopeless maxillary teeth. Preoperative study casts were constructed. Periapical radiographs and orthopantomographs were taken. Phase-I surgery, including plaque control measures, scaling and root planning, was performed for each patient. The selected teeth were extracted atraumatically after the reflection of full-thickness flaps buccally and palatally. One -piece HR implants were placed immediately into the sockets after drilling 3 to 4 mm beyond the root apex. Fisiograft in powder form was applied in the osseous defects around the implants and the alloderm membranes were placed over the graft material and secured under the flaps and the wounds were sutured. The implants were immediately restored with provisional crowns free from occlusion. Patients were evaluated both clinically at 1, 3, and 6 months after loading and radiographically at 1 and 6 months after implant placement. Results showed that the materials used fulfilled the aims that they were used for. The Fisiograft functioned well as space maker and scaffolding material. The alloderm performed well as a membrane to be used in association with immediate implants as well as its potentiality to increase the width of keratinized gingiva which is an important feature for implant esthetics