Thesis
A retrospective study on the survival of natural teeth adjacent to posterior Straumann implants
University of Iowa
Master of Science (MS), University of Iowa
Spring 2022
DOI: 10.25820/etd.006591
Abstract
Objective: The purpose of this study was to determine the survival outcome of natural teeth adjacent to posterior Straumann tissue level and bone level implants. Methods: Data was retrospectively evaluated using Axium Electronic Health Records system (EHR) from 2008 to 2017. Inclusion criteria: single implants placed in posterior sites with adjacent natural teeth on both sides at the time of placement. Hawk IRB approvals #202003237 and #202105431 were obtained prior to initiating different parts of the study. The analysis focused on Straumann implants (tissue (TL) and bone level (BL)). A total of 189 patients and 216 individual implant sites were evaluated. Data collected were caries risk assessment, soft and hard tissue information, periodontal charting (when possible), and 4-bitewing radiographs were taken (when possible). By comparing the hard tissue information on Axium at the time of implant placement to the documented treatment completion overtime, it was determined whether the subjects had received any restorative treatment, endodontic work and/or teeth extractions to the adjacent teeth.
Results: 216 sites of interest and 162 individual patient charts met the inclusion criteria. An additional 139 subjects were invited to return for periodic oral evaluations, of these twenty-seven subjects returned for these exams, for a total 189 patients. Statistical analysis showed subjects with high and moderate caries risk were more likely to have restorative work on adjacent teeth (marginally significant). Patients with BL implants received dental treatment 0.46 times less often than those with BL implants. A p-value of 0.05 demonstrates there was a statistical significance between Straumann tissue level or bone level implants on the survival of adjacent natural teeth. Caries risk assessment via DMFT and ADA CRA tools had a statistical significance for dental treatment after implant placement for moderate and high-risk patients (p-value = 0.06 and 0.02 respectively).
Conclusion: Recommendation for caries risk assessment to be done as part of diagnostics and treatment planning when planning for dental implants. Patients should be thoroughly educated on oral hygiene and diet education as well as implant complications. The most common treatment modality was tooth extraction of an adjacent tooth and tooth extraction replaced by a dental implant.
Details
- Title: Subtitle
- A retrospective study on the survival of natural teeth adjacent to posterior Straumann implants
- Creators
- Maria A. Martinez
- Contributors
- Salahaldeen Abuhammoud (Advisor)Shareef M Dabdoub (Committee Member)Tarek El Kerdani (Committee Member)Wei Shi (Committee Member)
- Resource Type
- Thesis
- Degree Awarded
- Master of Science (MS), University of Iowa
- Degree in
- Oral Science
- Date degree season
- Spring 2022
- Publisher
- University of Iowa
- DOI
- 10.25820/etd.006591
- Number of pages
- xi, 74 pages
- Copyright
- Copyright 2022 Maria A. Martinez
- Language
- English
- Description illustrations
- illustrations (some color)
- Description bibliographic
- Includes bibliographical references (pages 68-74).
- Public Abstract (ETD)
This study investigated the survival outcome of natural teeth adjacent to single posterior implants. Specifically, Straumann implants were investigated. Dental implants have become a very routine option of dental treatment in the dental setting to replace missing teeth; for this reason, it is important to study the effect of this treatment on remaining teeth. There are countless dental implant companies in the market, many offer different designs within their brands. The Straumann implant company offers two designs: tissue level and bone level lines. This study retrospectively evaluated these two designs to determine if and how they impacted the survival of adjacent natural teeth and thereby rendering a better design option for patients.
The results showed that patients with high and moderate caries risk were more likely to receive dental treatment after implant placement. Teeth adjacent to bone level implants required treatment 0.46 times less often than tissue level implants. This resulted in a statistical significance between these designs in predicting dental treatment need to the adjacent teeth (all site level). There was no statistical significance between bone grafting and dental treatment after implant placement. A significance was found for caries risk assessment, with moderate and high-risk patients receiving dental treatment more often. The most common treatment modality done after implant placement was tooth extraction of an adjacent tooth and tooth extraction replaced by another dental implant.
- Academic Unit
- Oral Pathology, Radiology and Medicine
- Record Identifier
- 9984271453102771
Metrics
36 File views/ downloads
51 Record Views