For citation purposes: Lauritano D, Caccianiga G. Periodontal aspects in orthodontics. OA Dentistry 2013 Aug 01;1(1):1.

Research study


Periodontal aspects in orthodontics

D Lauritano, G Caccianiga

Authors affiliations

Department of Surgery and Interdisciplinary Medicine, University of Milano-Bicocca, Milan, Italy

*Corresponding author



The demand for orthodontic treatment has been growing in the past few years, due to growing awareness and interest in general population for improving dental aesthetics and functionality. Adult orthodontics is increasing in popularity as it is becoming more feasible to move and improve teeth alignment, irrespective of the technique. Although a comprehensive orthodontic treatment cannot preclude the possibility of periodontal disease developing later, periodontal diagnosis and treatment can be a useful part of the overall treatment plan for a patient who could have periodontal involvement. The patient’s ability to achieve and maintain good overall oral hygiene and prevent periodontal disease is fundamental while undergoing orthodontic treatment. The aim of our study was to demonstrate the presence of red complex bacteria in orthodontic patients and the usefulness of new diagnostic tests to control periodontal disease during orthodontic treatment.

Materials and methods

A total of 146 individuals participated to the study, 72 of them were adult orthodontic patients (age range: 16–45 years, mean age: 27.3 years), and 74 constituted the control group homogeneous for age and sex. A single species of each patient is quantitatively analyzed with the real-time polymerase chain reaction, using the LABtest (LAB® s.r.l, Ferrara, Italy).


Prevalence of each red complex species is different among groups of patients with or without orthodontics appliances and has a high degree of statistical significance (Porphyromonas gingivalis, p = 5 × 10 – 6; Tannerella forsythia, p = 8 × 10 – 5; and Treponema denticola, p = 3 × 10 – 3).


Three bacterial species that constitute the red complex group—Porphyromonas gingivalis, Tannerella forsythia and Treponema denticola—are considered the main pathogens involved in periodontitis related to orthodontic therapy.

Licensee OA Publishing London 2013. Creative Commons Attribution License (CC-BY)