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Natural tooth intrusion phenomenon with implants: a survey
1Department of Restorative Dentistry, University of Colorado Health Sciences Center, School of Dentistry, Denver 80262, USA.
Summary
Connecting implants to natural teeth in implant-assisted fixed partial dentures (IAFPD) rarely causes natural tooth intrusion. This study found a 3.5% incidence, with no link to implant or connector type.
Area of Science:
- Dental Implantology
- Prosthodontics
- Biomaterials
Background:
- Osseointegrated implants are frequently used in fixed partial dentures.
- Connecting implants to natural teeth is often avoided due to differing mobility and potential long-term effects.
- Implant-assisted fixed partial dentures (IAFPD) combine natural teeth and implants as abutments.
Purpose of the Study:
- To determine the incidence of natural tooth intrusion in patients with IAFPD.
- To investigate potential correlations between tooth intrusion and implant or connector type.
Main Methods:
- A large patient population receiving IAFPD was surveyed.
- Data on natural tooth intrusion was collected and analyzed.
- The type of implant and connector used in each case was recorded.
Main Results:
- Natural tooth intrusion was observed in 3.5% of the surveyed patient population.
- No statistically significant correlation was found between the incidence of intrusion and the type of implant used.
- No correlation was identified between the incidence of intrusion and the type of connector employed.
Conclusions:
- Connecting natural teeth to implants in IAFPD results in a low incidence of natural tooth intrusion.
- The type of implant or connector does not appear to influence the likelihood of natural tooth intrusion.
- Current assumptions regarding the avoidance of connecting implants and natural teeth may warrant re-evaluation based on these findings.