Journal of Oral Tissue Engineering

Evaluation of Short Implants Installed in Atrophic Jaws

Hiroyuki NAKANO1, Yoichiro NAKAJIMA1,
Nahoko KATO-KOGOE1, Kazuya INOUE1,
Yasunori ARIYOSHI2, Keisuke MATSUMOTO1,
Naoko IMAGAWA1, Ayano OGURA1, Kayoko YAMAMOTO1,
Michi OMORI1, Naofumi YAMAMOTO1,
and Takaaki UENO1

1Department of Oral Surgery, Osaka Medical College, Osaka, Japan
2Department of Dental and Oral Surgery, Hirakata City Hospital, Osaka, Japan

J Oral Tissue Engin 2020; 18(1): 29-34.

We herein report on the usefulness of short implants in the posterior mandibular region of a 51-year-old woman with chief complaint of untreated caries of the lower second molar on the left side. Implant surgery was performed using standard Astra Tech protocol. We determined the final drill diameter according to bone quality, and a 4.0 x 10-mm (diameter x length) implant was inserted into the left mandibular molar region. After 3 months of submerged healing, provisional, screw-retained, reinforced, acrylic restorations rigidly joining the implant were placed on the abutment. The occlusal surface was adjusted to be in slight contact with the opposite dentition. Four months after the placement of the provisional prosthesis, the implant was manually tested for stability, and a definitive metal?ceramic restoration rigidly joining the implant with occlusal surface in metal was embedded on the titanium-based abutment. There have been no serious problems for more than 5 years.

Key words: short implant, insufficient bone height, bone augmentation

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