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Aim To evaluate the effect of audiovisual distraction on the dental chairside behaviour of children with Down syndrome (DS) during dental restorations and its influence on the operator stress and the duration of the appointment. Materials and Methods Study design: This randomised controlled trial included 48 children with DS requiring dental restorations. The study group was treated while wearing video eyeglasses, the control group with conventional behaviour management techniques. The child behaviour was evaluated using the revised Face, Leg, Activity, Cry, Consolability scale (r-FLACC) and the Frankl scale. The operator stress was evaluated using a VAS scale and the duration of the appointment was recorded. Results In the study group 64% of the children refused to wear the video eyeglasses during the whole duration of the dental treatment, the median r-FLACC score was significantly higher (p= 0.01552; Mann Whitney U test) and significantly more children showed a negative behaviour (68%vs 30%: p =0.011; Chi-square test). Conclusion Audiovisual distraction using video eyeglasses is not useful in managing the dental chairside behaviour of children with DS.

The aim of the present prospective study was to evaluate periodontal health and subgingival microbiological alterations in adolescents treated with fixed self ligating orthodontic brackets in comparison to subject without any orthodontic appliance. A total of 40 adolescents (23 females and 17 males; mean age: 13.2 ± 3.2 years) were included: 30 subjects with self ligating brackets (test group) and 10 patients without orthodontic appliances (control group). Follow-ups were as follows: T1 (1 month), T2 (3 months), T3 (6 months) from the beginning of the orthodontic therapy. Clinical parameters (plaque index, gingival index and clinical attachment level) were measured for every patient and a microbiological analysis was performed. Mann Whitney test was performed to evaluate clinical parameters between test and control group and Friedman test and Fisher test were adopted to evaluate intra group differences at different follow-ups. Student T-test was performed to compare clinical attachment level between the two groups. Significance level was set at p0.05. No periodontal pathogens and no clinical attachment loss were found in the whole sample. A slightly higher plaque index and gingival inflammation were recorded in the test group in comparison to the controls.

Sjögren's Syndrome is a complex disease, due to an autoimmune physiopathology, that strongly impacts both patients' primary needs (nutrition and speaking), and patients' relationship life related factors (psychological health and quality of life). In Literature, few studies had investigated oral health status in Sjögren's syndrome and its impact on patients' quality of life, so the aim of this study was to analyse that issue. 30 patients were enrolled, within the Department of Rheumatology (University of Pisa), both first diagnosis patients' and both patients who had been diagnosed with Sjögren's syndrome in the past. For each patient, a medical record was filled out together with the compilation of the Oral Health Impact Profile questionnaire. Then, during a specialistic rheumatologic visit, Sjögren's Syndrome Disease Damage Index Score (SSDDI) was determined. Results showed a direct proportion between years from diagnosis and severity of oral health issues. It was found that these issues were related to soft tissue damage and an overall worse, reported quality of life and psychological health.

Molar incisor hypomineralization (MIH) is one of the most pressing issues in paediatric dentistry. It is a qualitative enamel defect of systemic origin that affects at least one first permanent molar and can also be associated with permanent incisors. However, the same defects have also been observed on primary molars and other permanent teeth. Hypomineralised enamel has less distinct prisms edges and crystals and the interprismatic space is more marked. Children with MIH undergo dental treatment nearly 10 times more than unaffected children. Preventive treatment following the diagnosis of MIH should take into account patient's age and collaboration, patient's caries risk, type and extension of demarcated lesions and hypersensitivity. Risk assessment and early diagnosis are key factors to an effective and conservative treatment.

The aim of this study was to evaluate the shape and the average size of the maxillary and mandibular arch in an Italian adolescents' sample with correct occlusion, using the digital technology. The study sample was composed, after the use of an extra-oral scanner and after the application of inclusion and exclusion criteria, by the digitized dental casts of 79 Italian adolescents (39 females and 40 males), aged 14±1 years, with correct occlusion. On each model, both upper and lower, the reference points of the dental arches (FA), of the alveolar bone (WALA ridges) and of the incisal edge of the central incisors were identified. With these points, using a software, fourteen parameters were evaluated for each cast: basal and dental intermolar and inter-canine width, basal and dental molar and canine depth, basal and dental molar and canine ratio, overjet, overbite. Finally, the shape of the arches was assessed, dividing it into ovoid, triangular or square. Chi-square test and Student's T-test for each parameter were adopted with a p0,05 significance level. The results showed that the ovoid form was the most frequent, followed by the triangular one for the upper arch and by the rectangular one for the lower arch. On the canine level, both upper and lower, both for dental and for basal references, the triangular shape showed the lowest width and ratio values and the highest depth values in comparison with the other two groups. The square one showed the opposite situation, and the ovoid one presented in the intermediate value. On the molar level the trend is quite similar to the canine one. The results obtained maybe suggest that on a significant percentage of the patients of the sample is expected to use a preformed ovoid arch wire, and the data found could be useful to study the adequacy of the arch wires currently on the market or to design new ones. .

Background and Overview Severely molar-incisor hypomineralization (MIH)–affected teeth are prone to develop early posteruptive enamel breakdown (PEB) and caries. A novel conservative interim approach for the prevention of this complication is presented. Case Description A 6-year-old boy with strong hypersensitivity and extensive brown opacities in the partially erupted mandibular permanent first molars (PFMs) was diagnosed with MIH. Constant hygiene and dietary counseling were followed by the application of luted orthodontic bands and glass ionomer sealants to protect PFMs from caries and PEB until the complete eruption of the teeth. After 36 months, the PFMs were completely erupted, with no caries and PEB, and the cooperation of the child increased. Conclusions and Practical Implications Temporary strategies are useful to preserve MIH-affected PFMs. With the methodology described, the hypersensitivity decreased and the patient reached a good degree of cooperation, making possible definitive rehabilitative considerations.