Case report of a newly designed narrow-diameter implant with trapezoid-shape for deficient alveolar bone

Lee,  Sa Ya; Goh,  Mi-Seon; Ko,  Seok-Yeong; Yun,  Jeong-Ho

doi:2018.56.5.263

J Korean Dent Assoc > Volume 56(5); 2018 > Article

The Journal of The Korean Dental Association 2018;56(5):263-276.
DOI: https://doi.org/10.22974/jkda.2018.56.5.002 Published online May 31, 2018.

좁은 치조골에서 사다리꼴형 디자인으로 개발된 단폭경임플란트의 증례 보고

이사야¹, 고미선², 고석영³, 윤정호⁴

^¹전북대학교 치과대학 치주과학교실, 구강생체과학연구소
^²전북대학교 치과대학 치주과학교실, 구강생체과학연구소
^³전북대학교 치과대학 치주과학교실, 구강생체과학연구소
^⁴전북대학교 치과대학 치주과학교실, 구강생체과학연구소

Case report of a newly designed narrow-diameter implant with trapezoid-shape for deficient alveolar bone

Sa Ya Lee¹, Mi-Seon Goh², Seok-Yeong Ko³, Jeong-Ho Yun⁴

¹Department of Periodontology, College of Dentistry and Institute of Oral Bioscience, Chonbuk National University
²Department of Periodontology, College of Dentistry and Institute of Oral Bioscience, Chonbuk National University
³Department of Periodontology, College of Dentistry and Institute of Oral Bioscience, Chonbuk National University
⁴Department of Periodontology, College of Dentistry and Institute of Oral Bioscience, Chonbuk National University

Abstract

Long-term survival and prognosis of narrow-diameter implants have been reported to be adequate to consider them a safe method for treating a deficient alveolar ridge. The objective of this study was to perform case report of narrow-diameter implants with a trapezoid-shape in anterior teeth alveolar bone. A 50-year-old male patient presented with discomfort due to mobility of all of the maxillary teeth and mandibular incisors. Due to destruction of alveolar bone, four anterior mandibular teeth were extracted. Soft tissue healing was allowed for approximately 3 months after the extraction, and a new design of implant placement was planned for the mandibular incisor area, followed by clinical and radiological evaluation. Implant placement was determined using an R2GATE surgical stent. The stability of the implants was assessed by ISQ measurements at the first and second implant surgery and after prosthetic placement. At 1 and 3 months and 1 year after implantation of the prosthesis, clinical and radiological examinations were performed. Another 50-year-old male patient presented with discomfort due to mobility of the mandibular central incisors. For the same reason as in the first patient, implant placement was carried out in the same way after extraction. ISQ measurements and clinical and radiological examinations were performed as in the previous case. In these two clinical cases, 12 months of follow-up revealed that the implant remained stable without inflammation or additional bone loss, and there was no discomfort to the patient. In conclusion, computer-guided implant surgery was used to place an implant in an optimal position considering the upper prosthesis. A new design of a narrow-diameter implant with a trapezoid-shape into anterior mandibular alveolar bone is a less invasive treatment method and is based on the contour of the deficient alveolar ridge. Through all of these procedures, we were able to reduce the number of traumas during surgery, reduce the operation time and total treatment period, and provide patients with more comfortable treatment.

Key Words: Osseointegration;Narrow-diameter implant;Guided implant surgery;