J Dent Rehabil Appl Sci.  2017 Mar;33(1):47-54. 10.14368/jdras.2017.33.1.47.

Implant placement simultaneously sinus augmentation using crestal approach in severely atrophic maxilla; minimally invasive approach

• Kim HJ
• Kwon EY
• Choi J
• Lee JY
• Joo JY

• KMID: 2377059
• DOI: http://doi.org/10.14368/jdras.2017.33.1.47

Abstract

The atrophy of edentulous ridge and pneumatization of the maxillary sinus often limit the volume of bone available for implant placement on maxillary posterior teeth. Most clinicians suffer difficulties from poor bone quality and quantity on maxillary posterior site. Thus, the success of maxillary posterior implant surgery depends on the increase of the available bone and obtaining a good initial stability of the implant after maxillary sinus reconstruction. The maxillary sinus augmentation methods include a crestal approach and a lateral approach. Less morbidity and complications after operation is major advantage to sinus augmentation using crestal approach than lateral approach. However, when the residual ridge height is ≥ 6 mm, it is known that crestal approach is appropriate. Also delayed implantation after sinus augmentation is recommended in severely atrophic ridge. We present the three cases of implant placement simultaneously sinus augmentation using crestal approach in posterior maxilla site with ≤ 3 mm of residual alveolar bone.

Keyword

dental implants; maxillary sinus; alveolar bone grafting; molar

MeSH Terms

Alveolar Bone Grafting
Atrophy
Dental Implants
Maxilla*
Maxillary Sinus
Molar
Tooth
Dental Implants

Figure

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  Fig. 1 Radiographic findings of the 1st case. Left maxillary first molar was hopeless due to severe periodontitis (A). Residual bone height was 1.4 mm and bone quality was very poor on #26 site (B and C). Panorama view after #26 implantation (D).

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  Fig. 2 Radiographic and clinical findings one year after #26i final prosthesis delivery. Marginal bone and augmented bone level was stable (A) and soft tissue was healthy (B).

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  Fig. 3 Radiographic findings of the 2nd case. Residual bone height was 2.2 mm and schneiderian membrane was thicknening (A and B). Panorama view after #26 implantation (C). Marginal bone and augmented bone level was stable 1.5 year after final prosthesis delivery (D).

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  Fig. 4 Radiographic findings of the 3rd case. Residual bone height was 2.9 mm and poor bone quality was observed (A and B). Panorama view after #23 and #25 implantation (C).

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  Fig. 5 Radiographic and clinical findings one year after #25i final prosthesis delivery. Marginal bone and augmented bone level was stable (A) and soft tissue was healthy (B).

Reference

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