Journal
INTERNATIONAL JOURNAL OF ORAL & MAXILLOFACIAL IMPLANTS
Volume 36, Issue 3, Pages 561-568Publisher
QUINTESSENCE PUBLISHING CO INC
DOI: 10.11607/jomi.8574
Keywords
adolescents; dental implants; survival rates
Categories
Funding
- FAPESP [2012/19078-7, 2016/18818-8, 2019/08693-1]
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq) [304589/2017-9, 434487/2018-0]
- CAPES [001]
- Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP) [16/18818-8] Funding Source: FAPESP
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This study evaluated the clinical outcomes of unsplinted implant-supported single crowns in adolescents aged 10-19 years. Results showed high implant and prosthesis survival rates with a minimal bone crest level increase relative to adjacent teeth.
Purpose: To evaluate the clinical outcomes of unsplinted implant-supported single crowns placed in adolescents, ages 10 to 19 years, and followed up from 5 to 15 years. Materials and Methods: This retrospective case series evaluated the outcomes of implant-supported single crowns placed in adolescents between June 2002 and January 2015. The patients were treated with locking-taper connection implants under a two-stage rehabilitation technique. The variables assessed included patient identification, age and reason for implant placement, implant dimensions, follow-up time, status at follow-up, and event description. To analyze peri-implant changes, bone crest level relative to the adjacent tooth was measured from periapical radiographs taken after implantation and the latest follow-up. A paired t test was performed to determine initial and follow-up differences, and data are shown as mean and 95% confidence interval. Cumulative Kaplan-Meier survival rates for implants and prostheses were calculated. Results: Twenty-one adolescent patients with ages ranging from 14 to 19 years, mainly 16 to 18 years, received a total of 37 implant-supported single crowns more frequently placed in the anterior maxilla as a result of congenital aplasia and trauma. Mean changes in bone crests were 1.99 (+/- 0.4) mm at the day of crown insertion and 2.23 (+/- 0.4) mm at the latest follow-up (average: 10 years; P=.08). No implant was lost during the follow-up period, leading to 100% implant survival. A total of 34 surviving crowns and 3 crown failures at the time of the latest follow-up led to a cumulative survival rate of 70%. The most commonly observed event was loss of proximal contacts and infraocclusion, which were handled chairside by adding resin composite. Conclusion: Unsplinted implant-supported single crowns placed in adolescents showed high implant and prosthesis survival rates, with a mean bone crest level increase of approximately 0.23 mm relative to the adjacent teeth.
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