Positional changes of maxillary central incisors following orthodontic treatment using single-crown implants as fixed reference markers
| Autor: | Nils Worsaae, Betty Holm, Liselotte Sonnesen, E. B. Brahem, Klaus Gotfredsen |
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| Rok vydání: | 2017 |
| Předmět: |
Adult
Male Adolescent Radiography Dentistry Single crown 03 medical and health sciences Young Adult 0302 clinical medicine Dental Implants Single-Tooth stomatognathic system Incisor Orthodontic Appliances medicine Maxilla Humans Displacement (orthopedic surgery) Maxillary central incisor In patient Orthodontics Crowns business.industry 030206 dentistry Tooth Migration Middle Aged stomatognathic diseases medicine.anatomical_structure Case-Control Studies Female Implant Oral Surgery business 030217 neurology & neurosurgery Follow-Up Studies |
| Zdroj: | Clinical oral implants research. 28(12) |
| ISSN: | 1600-0501 |
| Popis: | Objectives This follow-up study (1) compares tooth displacement of central incisors in patients with and without pre-implant orthodontic treatment and (2) investigates whether sex, age, or orthodontic retention have an effect on tooth displacement after the insertion of single-crown implants. Materials and Methods Fifty-seven patients – thirty-seven with (test group) and twenty without pre-implant orthodontic treatment (control group) – were rehabilitated with 89 single-crown implants in the upper maxilla. Clinical and radiographic data, clinical photographs, and dental casts were collected during baseline examinations after prosthetic rehabilitation and at the final follow-up examination at least 5 years later. A total of 114 dental casts were digitalized and aligned using a software program to measure changes in the positions of the central incisors. Results After a follow-up period of at least five years, 87% of the central incisors measured in the test group were displaced >0.25 mm vertically compared with 70% in the control group. Seventy-eight percent of the test group teeth had moved >0.25 mm horizontally compared with 55% in the control group. These differences were not significant, and there were no significant correlations with patient age or sex. Conclusion The majority of patients had minor vertical (60%) or horizontal (67%) tooth displacement of the central incisors (0.25–0.75 mm) after a minimum follow-up period of 5 years. This study found no significant differences in tooth displacement comparing patients with and without pre-implant orthodontic treatment. No significant effect of sex, age, orthodontic retention, or implant location was observed on tooth displacement. |
| Databáze: | OpenAIRE |
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