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Online ISSN 1827-174X
Gaetano ISOLA 1, 2, Luca RAMAGLIA 2, Giancarlo CORDASCO 1, Alessandra LUCCHESE 3, Luca FIORILLO 1, Giovanni MATARESE 1
1 Department of Biomedical, Odontostomatological Sciences and of Morphological and Functional Images, School of Dentistry, University of Messina, Messina, Italy; 2 Department of Neurosciences, Reproductive and Odontostomatological Sciences, School of Medicine, University of Naples "Federico II", Naples, Italy; 3 Research in Dentofacial Orthopedics, Orthodontics and Pediatric Dentistry, Research Area in Oral Pathology and Implantology, IRCCS San Raffaele Hospital, Milan, Italy
BACKGROUND: Patients affected by Juvenile Idiopathic Arthritis (JIA) may have several craniofacial growth disturbances and involvements at the temporomandibular joint (TMJ). The objectives of the present study were to evaluate the clinical effectiveness of functional therapy used to reduce asymmetry of mandibular growth and TMJ disorder in patients with JIA.
METHODS: By a retrospective longitudinal design, a cohort of 54 patients with JIA (mean age, 13.2 ± 3.7 years; range, 5-17.7 years) and with TMJ involvements was enrolled in the study. Each patient, following the collection of clinical parameters, was treated for 24 months with a functional appliance individually customized by acrylic resin and resilient stainless steel with posterior and anterior metallic bite planes preventing the teeth from intercuspal contact. To evaluate differences before (T0) and after therapy (T1) of the clinical TMJ parameters, the statistical analysis by the chi squared test was performed.
RESULTS: All the patients completed successfully the study. In patients with JIA, the use of a functional appliance determined a statistically significant difference of the pain during jaw movement, maximal mouth opening, TMJ sounds and crepitations (p<0.001) and TMJ click, significantly reduced at T1 (p<0.05).
CONCLUSIONS: The use of an orthodontic functional appliance determined a significant improvement, at 24 months, in many TMJ signs and symptoms in patients affected by JIA and with TMJ disorders. This study suggests that children and adolescents with JIA which presented either unilateral or bilateral moderate to severe TMJ involvement, if not treated, should be develop severe disturbances during growing.