Introduction. Periodontal health and dental prosthesis of restored teeth are interconnected and inseparable. It is widely accepted that the biologically healthy margin is the one placed coronally to the marginal tissue. Aim. To compare the periodontal status around complete crowns with the percentage and number of bleeding points and clinical attachment loss in relation to different locations of crown margins. Materials and methods. 117 crowns of the patients who visited the interns’ clinic for a routine dental recall were observed. Periodontal parameters such as plaque index, gingival bleeding points, clinical attachment level and probing pocket depth were included for clinical examination. Results and disscusion. Out of the 117 crowns evaluated, 46 were subgingivally, 32 equigingivally and 39 supragingivally located margins.The plaque index and gingival index scores were higher in subgingivally located margins. CAL?? (full ednomination?) Was higher in relation to subgingival margins. On overall examination, increased incidence of severe gingival inflammation was found in relation to crown margins located subgingivally. Conclusion. Gingival tissues in areas of subgingival margins tend to bleed more and have a three times higher chance of clinical attachment loss than the supragingival margin. Apart from the functional and aesthetic results, dental prostheses must also correspond to biological needs.Keywords:
- clinical attachment loss.
- crown margin
- periodontal health
- subgingivally supragingivally