ALVEOLAR RIDGE RECONSTRUCTION USING A SPLIT-CREST TECHNIQUE IN ATROPHIC MAXILLA WITH BIO-OSS AND BIO-GIDE —TWO CASE REPORTS
by Carlos Renato Franco (Brazil), Rafael Antonio de Campos, Frederico Nigro, Bruno Aielo, Igor da Silva Brum, Carlos Eduardo Francischone

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Objectives: In clinical cases where a severe horizontal bone deficiency is present, it is very difficult to install implants in the perfect position for achieving optimum aesthetics and functional rehabilitation. The split-crest technique leads to reduced waiting times for installation of implants for maxillary defects of less than 3mm. The cases reported here underwent the split-crest technique with interposition of Bio-Oss biomaterial and were reopened for implant placement after five months. Methods: Patients were selected with a horizontal bone deficiency in the maxilla of 1.6–2.3mm. Both were fit for surgery. The preoperative assessment consisted of blood tests, CT scans and antibiotic prophylaxis and full treatment plans were presented to the patients. Infiltrative terminal anesthesia was applied until satisfactory tissue ischaemia was produced. An incision was made above the crystal with 15c blades and mesiodistal relaxing incisions. After total detachment and bone mucoperiostal exposure, a tag 701 was made with a surgical drill at the cortical level, completed with a metal disc osteotomy. A chisel was used between the markings to achieve total displacement of cortical , to achieve sufficient expansion and an intact nasal spine . Screws were placed at the base of each fracture, preventing vestibular cortical blades from moving during bone maturation. Gaps and remaining spaces were filled with Bio-Oss. Bio-Gide membranes were applied, the flap repositioned and the wound was closed by suturing without tension. Results: CT scans four months postoperatively showed increased bone width of approximately 5.2mm. There were no complications and both patients reported little discomfort after surgery. Both underwent further surgery for implant placement after five months. Primary stability of all implants was achieved and manufacturing the prostheses. Conclusion: The split-crest technique is a feasible option. Using Bio-Oss with a Bio-Gide membrane increased the maxillary bone thickness, which facilitated rehabilitation with dental implants.
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Content Type:
Poster
Publication date:
07/01/2016
Publisher: