Application of interconnected porous hydroxyapatite ceramic block for onlay block bone grafting in implant treatment: A case report (Review)

Ohta,Kouji; Tada,Misato; Ninomiya,Yoshiaki; Kato,Hiroki; Ishida,Fumi; Abekura,Hitoshi; Tsuga,Kazuhiro; Takechi,Masaaki

doi:10.3892/etm.2017.5224

Application of interconnected porous hydroxyapatite ceramic block for onlay block bone grafting in implant treatment: A case report (Review)

Authors:
- Kouji Ohta
- Misato Tada
- Yoshiaki Ninomiya
- Hiroki Kato
- Fumi Ishida
- Hitoshi Abekura
- Kazuhiro Tsuga
- Masaaki Takechi
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Affiliations: Department of Oral and Maxillofacial Surgery, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima 734‑8553, Japan, Department of Advanced Prosthodontics, Institute of Biomedical and Health Sciences, Hiroshima University, Hiroshima 734‑8553, Japan
Published online on: September 29, 2017 https://doi.org/10.3892/etm.2017.5224
Pages: 5564-5568

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Abstract

Autogenous block bone grafting as treatment for alveolar ridge atrophy has various disadvantages, including a limited availability of sufficiently sized and shaped grafts, donor site morbidity and resorption of the grafted bone. As a result, interconnected porous hydroxyapatite ceramic (IP‑CHA) materials with high porosity have been developed and used successfully in orthopedic cases. To the best of the author's knowledge, this is the first report of clinical application of an IP‑CHA block for onlay grafting for implant treatment in a patient with horizontal alveolar atrophy. The present study performed onlay block grafting using an IP‑CHA block to restore bone volume for implant placement in the alveolar ridge area without collecting autogenous bone. Dental X‑ray findings revealed that the border of the IP‑CHA block became increasingly vague over the 3‑year period, whereas CT scanning revealed that the gap between the block and bone had a smooth transition, indicating that IP‑CHA improved the process of integration with host bone. In follow‑up examinations over a period of 5 years, the implants and superstructures had no problems. An IP‑CHA block may be useful as a substitute for onlay block bone grafting in implant treatment.

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