Journal article
Sinus elevation procedures in the resorbed posterior maxilla. Comparison of the crestal and lateral approaches.
- Zitzmann NU Department of Fixed and Removable Prosthodontics, University of Basel, Switzerland.
- Schärer P
- 1998-02-25
Published in:
- Oral surgery, oral medicine, oral pathology, oral radiology, and endodontics. - 1998
Adult
Aged
Alveolar Bone Loss
Bone Regeneration
Bone Substitutes
Bone Transplantation
Female
Humans
Male
Maxillary Sinus
Middle Aged
Minerals
Oral Surgical Procedures, Preprosthetic
Osteotomy
Treatment Outcome
English
OBJECTIVES
The purpose of this study was to compare three different methods for sinus elevation: (1) the lateral antrostomy as a two-step procedure, (2) the lateral antrostomy as a one-step procedure, and (3) the osteotome technique with a crestal approach. Indication criteria were defined, based on the residual bone height measured from computed tomography scans, for the sake of applying the appropriate technique.
STUDY
In 30 patients designated for implant treatment in the resorbed posterior maxilla, 79 implants were placed in combination with a bone-grafting material for sinus augmentation. The final bone heights were measured from panoramic radiographs or post-operative computed tomography scans.
RESULTS
The success rate for the osteotome technique was 95% during the 30-month study period; no failures occurred in any site treated with a lateral antrostomy. The gain in bone height was comparable for the one-step (median = 10 mm) and two-step (median = 12.7 mm) lateral antrostomies. These sites exhibited a significantly greater increase in bone height (p < 0.001) than did the sites in which the osteotome technique was applied (mean = 3.5 mm). The histologic sections showed both bone apposition in intimate contact with the bone-grafting material particles and initial signs of its remodeling.
CONCLUSIONS
The results indicate that the osteotome technique can be recommended when more than 6 mm of residual bone height is present and an increase of about 3 to 4 mm is expected. In cases of more advanced resorption a one-step or two-step lateral antrostomy has to be performed.
The purpose of this study was to compare three different methods for sinus elevation: (1) the lateral antrostomy as a two-step procedure, (2) the lateral antrostomy as a one-step procedure, and (3) the osteotome technique with a crestal approach. Indication criteria were defined, based on the residual bone height measured from computed tomography scans, for the sake of applying the appropriate technique.
STUDY
In 30 patients designated for implant treatment in the resorbed posterior maxilla, 79 implants were placed in combination with a bone-grafting material for sinus augmentation. The final bone heights were measured from panoramic radiographs or post-operative computed tomography scans.
RESULTS
The success rate for the osteotome technique was 95% during the 30-month study period; no failures occurred in any site treated with a lateral antrostomy. The gain in bone height was comparable for the one-step (median = 10 mm) and two-step (median = 12.7 mm) lateral antrostomies. These sites exhibited a significantly greater increase in bone height (p < 0.001) than did the sites in which the osteotome technique was applied (mean = 3.5 mm). The histologic sections showed both bone apposition in intimate contact with the bone-grafting material particles and initial signs of its remodeling.
CONCLUSIONS
The results indicate that the osteotome technique can be recommended when more than 6 mm of residual bone height is present and an increase of about 3 to 4 mm is expected. In cases of more advanced resorption a one-step or two-step lateral antrostomy has to be performed.
- Language
-
- English
- Open access status
- closed
- Identifiers
-
- DOI 10.1016/s1079-2104(98)90391-2
- PMID 9474608
- Persistent URL
- https://folia.unifr.ch/global/documents/137465
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