Time-dependent effects of chitosan on dentin structures.

Complete debridement with smear layer removal are essential measures for achieving a successful outcome of root canal treatment. The aim of this study was to evaluate the effects of chitosan at different concentrations on the removal of the smear layer and on dentin structure after 3 and 5 min of application. Twelve recently extracted maxillary canine teeth were instrumented using the crown-down technique and irrigated with 1% sodium hypochlorite.

[Oral health and perceptions regarding dental care in patients with mental disorders living in therapeutic residences].

Patients with mental disorders have considerable difficulty in access to dental care, including the refusal of oral health professionals to offer care to this clientele and the inadequate professional training of oral health professionals regarding this issue. The present study was carried out in therapeutic residences in order to assess the oral health conditions of the residents as well as their perceptions regarding the dental care they have received. Thirty-eight individuals participated in the study.

[Impact of the existing tooth number on daily performance: pilot study].

To establish the relation between the aspects associated to the number of the teeth and the impact on daily performance it was realized a pilot study with 75 voluntary patients that had been divided in three groups: short arch, complete and toothless. To evaluate the impact the IODD was used (Index of the Oral Impacts on Daily Performance). The results had evidenced that 16% of the participants had at least one daily activity affected.