1. The prevalence of overhanging dental restorations and their relationship to periodontal disease;Brunsvold;J Clin Periodontol,1990
2. Biologic considerations;Nicholson,2006
3. Some predictors of radiographic alveolar bone height reduction over 6 years;Albandar;J Periodontal Res,1990
4. Understanding the etiology of periodontitis: an overview of periodontal risk factors;Nunn;Periodontol,2000
5. Marginal fit of restorations and its relation to peridontal bone level. I. Metal fillings;Björn;Odontol Revy,1969