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New bone formation in nongrafted sinus lifting with space-maintaining management: a novel technique using a titanium bone fixation device.

Abstract

PURPOSE
Sinus lifting without graft materials allows new bone formation in the sinus, but the amount of bone formation varies. This study aimed to investigate whether nongrafted sinus lifting using a titanium bone fixation device can promote bone formation in the sinus.
MATERIALS AND METHODS
Patients with atrophic posterior maxillae jeopardizing implant stability were included. After nongrafted sinus lifting in combination with implant placement, repositioning of the bone window and additional space-maintaining management were performed by use of the bone fixation device. The primary variables recorded retrospectively included implant survival and preoperative and postoperative alveolar crest height with and without Schneiderian membrane perforation. Independent variables included patient demographics, position and dimension of the implants, complications, and follow-up period. The t test was used for comparing differences in bone levels. The implant survival rate was estimated by uses of Kaplan-Meier statistics.
RESULTS
The study included 11 patients (4 men and 7 women) and a total of 21 implants. Radiographically, new bone formation around the implant was generally observed in accordance with the implant apex. Postoperative alveolar crest height (mean, 10.9 ± 2.2 mm) was significantly higher compared with residual alveolar crest height (mean, 4.7 ± 1.4 mm), and no significant difference in bone formation was seen according to membrane perforation. The cumulative survival rate was 95.2%.
CONCLUSIONS
This nongrafted sinus-lifting procedure using a bone fixation device could attain predictable bone formation. Additional space-maintaining management using a bone fixation device in a nongrafted sinus lift offers a useful technique for promoting bone formation in the sinus.

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  • Publisher Full Text
  • Authors

    Kaneko T, Masuda I, Horie N, Shimoyama T

    Institution

    Department of Oral and Maxillofacial Surgery, Saitama Medical Center, Saitama Medical University, Saitama, Japan. t_kaneko@saitma-med.ac.jp

    Source

    Journal of oral and maxillofacial surgery : official journal of the American Association of Oral and Maxillofacial Surgeons 70:3 2012 Mar pg e217-24

    MeSH

    Adult
    Aged
    Alveolar Ridge Augmentation
    Bone Regeneration
    Dental Implantation, Endosseous
    Dental Implants
    Dental Prosthesis Retention
    Female
    Guided Tissue Regeneration
    Humans
    Internal Fixators
    Jaw, Edentulous
    Kaplan-Meier Estimate
    Male
    Maxilla
    Middle Aged
    Oral Surgical Procedures, Preprosthetic
    Osseointegration
    Osteogenesis
    Osteotomy
    Retrospective Studies
    Sinus Floor Augmentation
    Titanium
    Treatment Outcome
    Vertical Dimension

    Pub Type(s)

    Clinical Trial
    Journal Article

    Language

    eng

    PubMed ID

    22374065