Background. The aim of this study was to compare retrospectively the effect of three different treatment protocols on the healing outcome in patients with established medication-related osteonecrosis of the jaw (MRONJ). Methods. A total of 34 MRONJ patients were recruited from the Department database and were divided according to the treatment protocols in a study group (G1) and two control groups (G2 and G3). G1 was treated with antibiotic therapy, surgery, leukocyte- and platelet-rich fibrin (L-PRF), and photobiomodulation; G2 was treated with antibiotic therapy and surgery; G3 was treated with antibiotic therapy and photobiomodulation. Various clinical variables and treatment protocols were analyzed to determine their correlation with the healing outcome at three and six months of follow-up. Results. There was a significant association between the different treatment protocols and the outcomes at both three and six months follow-up (p = 0.001 and p = 0.002, respectively). No significant association was observed between the outcomes and MRONJ localization, MRONJ stage, duration of drug treatment, gender, diabetes, corticosteroid therapy, smoking habits, underlying disease, and history of chemotherapy at both three and six months follow-up. Conclusions. Our results show that the combination of antibiotic therapy, surgery, L-PRF, and photobiomodulation may effectively contribute to MRONJ management.
Psoriatic arthritis (PsA) is a chronic inflammatory disease of the skin and joints characterized by extensive intra-articular bone resorption and silver-red scaly plaques most commonly found on extensor surfaces of the skin. When this arthritis affects the temporomandibular joint (TMJ) and does not successfully halt in its early degenerative process, patients may undergo invasive joint reconstruction that irreversibly changes the TMJ physiologic joint dynamics. This study presents a case of TMJ PsA: anterior open bite, limited range of motion, and erythematous desquamative plaques of the upper limb extensors surfaces. The patient previously received non-steroidal anti-inflammatory drugs, immunosuppressors, and corticosteroids over a four-year period while suffering the idiosyncratic drug side effects from long-term therapy without improvement in joint function or rash resolution. The treatment team then chose etanercept, a synthetic fusion protein therapy that binds with tumor necrosis factor (TNF)-alpha, to interrupt reactive inflammatory arthritis. The patient received the TNF-alpha inhibitor monthly for two years. This last treatment led to full remission of both joint symptomatology and skin lesions. Our results should encourage general dental practitioners' involvement in curing patients with psoriatic arthritis when it affects the TMJ.Key words: Etanercept, psoriatic arthritis, TMJ, immunomodulators.Abbreviations and acronyms: MRI = magnetic resonance imaging; NSAIDs = non-steroidal anti-inflammatory drugs; PASI = Psoriasis Area and Severity Index; PsA = psoriatic arthritis; RF = rheumatoid factor; TMJ = temporomandibular joint; TNF = tumor necrosis factor.
Purpose. Various parameters can influence temperature rise and detection during implant site preparation. The aim of this study is to investigate local temperature values in cortical and corticocancellous bovine bone during early stages of piezoelectric implant site preparation. Materials and Methods. 20 osteotomies were performed using a diamond tip (IM1s, Mectron Medical Technology, Carasco, Italy) on two different types of bovine bone samples, cortical and corticocancellous, respectively. A standardized protocol was designed to provide constant working conditions. Temperatures were measured in real time at a fixed position by a fiber optic thermometer. Results. Significantly higher drilling time (154.90 sec versus 99.00 sec; p < 0.0001) and temperatures (39.26°C versus 34.73°C; p = 0.043) were observed in the cortical group compared to the corticocancellous group. A remarkable variability of results characterized the corticocancellous blocks as compared to the blocks of pure cortical bone. Conclusion. Bone samples can influence heat generation during in vitro implant site preparation. When compared to cortical bone, corticocancellous samples present more variability in temperature values. Even controlling most experimental factors, the impact of bone samples still remains one of the main causes of temperature variability.
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