Survival of resin-bonded bridgework provided for post-orthodontic hypodontia patients with missing maxillary lateral incisors
| Autor: | Francis Nohl, M. J. Garnett, Robert Wassell, N J Jepson |
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| Rok vydání: | 2006 |
| Předmět: |
Adult
Male Adolescent Statistical difference Dentistry Orthodontics Corrective Mean Survival Time Maxilla Humans Medicine Life Tables Dental Restoration Failure Denture Design Restorative dentistry General Dentistry Anodontia Retrospective Studies Orthodontics business.industry Proportional hazards model Dental health Hazard ratio medicine.disease Survival Analysis Incisor Hypodontia Regression Analysis Female Case note Clinical Competence business Denture Partial Fixed Resin-Bonded Follow-Up Studies |
| Zdroj: | British Dental Journal. 201:527-534 |
| ISSN: | 1476-5373 0007-0610 |
| Popis: | Objective To analyse the clinical performance and factors influencing the survival of resin-bonded bridgework provided for hypodontia patients with missing maxillary lateral incisors, following orthodontic treatment to open, maintain or redistribute the missing tooth space. Design A retrospective analysis of patients treated at a single centre using case notes with all patients invited for review to corroborate findings. Setting Departments of Orthodontics, Child Dental Health and Restorative Dentistry, Newcastle upon Tyne Dental Hospital and School. Subjects and methods Between 1989-2000, 59 suitable hypodontia patients were identified of whom 45 had complete records. For these patients 73 resin-bonded bridges (RBBs) were provided. Following invitation, 24 patients attended for a review appointment. The survival of the RBBs, grade of operator providing treatment, duration of post-orthodontic retention, the influence of design, presence of pontic contact in static and dynamic excursions, and the effect of habits were assessed. Life table, Kaplan-Meier and Cox regression analysis were carried out for the 73 RBBs with complete records. A separate analysis of the RBBs provided for patients who attended for the invited review did not show a higher failure rate than those patients who did not attend. Therefore both sets of data were combined. Results Of the 73 RBBs provided, 30 had debonded on at least one occasion (41.1%), six of these debonds were due to trauma (20%). The mean survival time of all the restorations was 59.3 months, with a median survival time of 59 months. Senior members of staff (Consultant, Senior Lecturer or Specialist Trainee) provided most restorations (n = 39) and achieved the highest mean survival of 72.6 months and median survival time of 100+ months. RBBs provided by junior staff and students had significantly lower survival times (p |
| Databáze: | OpenAIRE |
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