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Long-standing plaque and gingivitis at implants and teeth in the dog
I Ericsson1, T Berglundh, C Marinello
1Faculty of Odontology, University of Göteborg, Sweden.
Clinical Oral Implants Research
|September 1, 1992
Summary
Long-term plaque accumulation significantly impacts oral tissues, causing inflammation in both gingiva and peri-implant mucosa. Histological analysis revealed similar inflammatory cell infiltrates in both sites, with more pronounced effects around implants.
Area of Science:
- Periodontology
- Biomaterials Science
- Oral Histopathology
Background:
- Dental implants aim to replace missing teeth, but their long-term success depends on maintaining healthy peri-implant tissues.
- Understanding the effects of plaque accumulation on peri-implant mucosa is crucial for preventing implant complications.
Purpose of the Study:
- To evaluate the effects of sustained plaque accumulation on gingival and peri-implant mucosal tissues.
- To compare the inflammatory responses in gingiva versus peri-implant mucosa.
Main Methods:
- Titanium fixtures were surgically placed in beagle dogs' premolar sites.
- After a healing period, plaque accumulation was allowed for 90 days.
- Histological analysis of biopsies from gingival and peri-implant tissues was performed.
Main Results:
- Extensive plaque accumulation occurred on both teeth and implants after 90 days.
- Both gingival and peri-implant soft tissues exhibited bleeding upon probing.
- Histological examination showed inflammatory cell infiltrates in both tissues, with a more apical extension in peri-implant mucosa.
Conclusions:
- Long-standing plaque induces inflammation in both gingival and peri-implant tissues.
- Peri-implant mucosa may exhibit a more pronounced inflammatory response to plaque compared to gingiva.
- The inflammatory lesion composition shares similarities between the two tissue types.