RESUMO
OBJECTIVES: To report three-dimensional (3-D) movement of teeth adjacent to single-implant crowns (SICs) in the anterior maxilla and to relate the findings to patient characteristics and esthetic outcome. MATERIALS AND METHODS: 3-D movements of teeth adjacent to anterior maxillary SICs were measured in 30 patients with original SICs in function after 14-20 years. The movements were related to facial type, lower anterior facial height (LAFH), age at crown delivery, sex, the position of the implant, implant occlusion, cause of tooth loss, follow-up period, orthodontic treatment prior to implant placement, and marginal bone-level changes. The esthetic outcome and quality were assessed using Visual Analog scale (VAS) and California Dental Association (CDA) index. RESULTS: 3-D movement of adjacent teeth between 0 and 2.5 mm was observed at follow-up with incisal and palatal movement being most pronounced. Incisal tooth movement of >1 mm was observed in 30% of the patients and was significantly associated with LAFH ≥70 mm. VAS rating associated poorly between patients and clinicians with scores of >80% in 63% and 20%, respectively. The CDA rating was assessed as satisfactory in 87% of the patients. CONCLUSIONS: Significantly more extensive infraposition was observed in patients with SICs without occlusion, other causes of tooth loss than trauma, implant in lateral incisor and canine position, and a LAFH of ≥70 mm. Although infraposition occurs, patients are highly satisfied with the esthetics of their implants and the esthetic results are valued as higher by patients than dentists.
Assuntos
Implantes Dentários para Um Único Dente , Implantes Dentários , Estética Dentária , Seguimentos , Humanos , Satisfação do Paciente , Resultado do TratamentoRESUMO
BACKGROUND: The aim of the study was to evaluate a potential association between individuals with different craniofacial types or other exposures, and the risk of infraposition due to continued growth/eruption of adjacent teeth in the anterior maxilla. MATERIALS AND METHODS: This is a systematic review in which primary studies as well as other systematic reviews are scrutinised. A search of PubMed (Medline), Scopus, Web of science and Health technology assessment (HTA) organisations and a complementary handsearch was carried out. Selected studies were read in full-text by several reviewers. The quality of the included primary studies was assessed using a protocol for assessment of risk of bias in exposure studies. RESULTS: The literature search resulted in 3,296 publications. Title and abstract screening yielded 25, whereof one systematic review, potential publications allocated for full-text inspection. The quality assessment resulted in a total of seven studies with a low/moderate risk of bias and four studies with a high risk of bias. CONCLUSION: In conclusion, a long-term risk for infraposition of dental implants, or ankylosed teeth, among natural teeth can be observed in some cases. The predisposing factors are still not fully understood since the current scientific evidence is very limited.
Assuntos
Implantes Dentários , Implantes Dentários/efeitos adversos , Humanos , Maxila , Erupção DentáriaRESUMO
BACKGROUND: Single implant restorations have become the primary treatment option for young adults with missing anterior teeth. Yet, long-term studies of single-implants are limited in the literature. PURPOSE: To report long-term survival, success, and complications in young adults with single-implants in the anterior maxilla. MATERIALS AND METHODS: A group of 42 patients (mean age 20.7 years) received 53 anterior maxillary single-implants during 1996 and 1997. Data were collected at delivery of the crown, at 1-year examination, and at 14-20-year examination. Descriptive statistics, estimated cumulative survival rates, Pearson correlation test, and t-test were performed. RESULTS: After 14-20 years, 40 out of 42 patients were examined. Two patients were lost to follow-up, two implants failed and ten original single-crown restorations were replaced. Estimated cumulative survival rates were 96.1% for implants and 80.4% for implant-supported crowns. Complications were seen in 21 patients. Mean probing depth was 4.0 ± 1.8 mm and mean marginal bone loss was 0.1 ± 1.1 mm. No correlation was found between marginal bone loss and probing depth, occlusal contact in maximal intercuspal position or usage of nicotine. CONCLUSIONS: Long-term prognosis of single implant treatments in the anterior maxilla in young adults must be regarded as good, with high survival and success rates.
