Revista dental de Chile最新文献

This article brings a historical view and main characteristics of the semiprecision attachments. A descriptive analysis is done, in which classification and properly indication are treated. More over, semiprecision attachments are compared with both conventional retention systems and precision or prefabricated attachments.

Out of a total of 366 preschoolers, aged 3-5 years old, from the urban area of Curacautín, a sample of 46 children is selected using a behavioral classification to choose those children difficult to manage. A double-blind type investigation is realized using a posology of the drugs: Chlormezanone and Flunitrazepam as well as a placebo. The distribution of the doses is in accordance with the so called "Latin Table". The results obtained indicate that both drugs are effective, with a 90.6% success rate case of Chlormezanone and 92.8% effectiveness in the case of Flunitrazepam. In terms of the placebo, the success rate was 15% with a higher rate in the third medication, possibly due to better psychological predisposition on the child's part.

We described therapeutical aspects for treatment of moderated temporomandibular subluxation of the joint disc, with emphasis about the concepts of reduction and immobilization of traumatology, previous to the functional rehabilitation. We used a technique in 14 patients that were previously diagnosed clinical and radiographically, and within the diagnostic procedures we estimated temporomandibular disturbances as an important factor in pre and post treatment to obtain articular stabilization.

We studied saliva sample of 134 persons of both sex; including healthy persons and patients with periodontal disease. We researched the saliva's pH variations and found Lie at alkali pH in the patients with periodontal disease and different saliva pH between men and women.

We reviewed the fundamentals aspects for diagnosis of temporomandibular joint (TMJ) osteoarthritis and its treatment in edentulous patients with the following objectives: to eliminate the inflammatory process, to obtain neuromuscular mandible centricity and to decrease the traumatic effects in the TMJ. We used occlusal splints and dentures that allowed the stabilization of intermaxillary relations in centric areas when it was harmonized the maximum intercuspidation and the muscular centric position. We described, also the treatment and in our opinion the neuromuscular intermaxillary relations are the start point to obtain definitive stability for the oral rehabilitation in edentulous patients.

The X-ray survey is an important complement in the diagnosis of the temporomandibular pathology, anyone be the modality of it. The complexity of the articular structure origins difficulties in order to obtain an objective analysis of them, and the presence of radio-transparent articular elements is another factor attempting against the radiological study. This X-ray survey must be realized by experimented professional in an multidisciplinary equipment in the temporomandibular management.

Recent morphologic studies have shown qualitative, how demineralizing substances clean teeth roots. In this work we attempt to describe quantitatively the "chelation process" and pH evolution of the quelator solution in-vitro inside the teeth during the reaction. These results indicate that Ca++ coming from hydroxyapatite release protons from EDTAH under neutral conditions. This is the most likely mechanism of the "self-limitation". Furthermore, it allow us to explain why EDTA Im and EGTA Im were more efficient than EDTA Na and EGTA Na upon demineralizing the tooth. EGTA Im turn out to be the fastest demineralizing agent as compared to EDTA Na which is currently employed in endodontic therapy.

We have analyzed the principles for the diagnostic of root caries and its etiology. We have defined preventives and restoratives measures that the general practitioner or the specialist can indicate. We discussed the results and prognostic effects of these procedures.

The aim of the present review was to evaluate the benefit of coating root cementum of periodontitis involved teeth with an specific agent to promote connective tissue attachment. This agent was fibronectin, a glycoprotein which enhanced periodontal cell migration to previously scaled and demineralized root surfaces.

The odontogenic myxoma is an uncommon tumor of the jaws. It occurs mainly on posterior mandible and affecting patients aged between second and third decade. This paper calls about an unusual case on a 57 years-old female patient. It appeared after extraction of lower bicuspid tooth. It was enucleated by curettage and has developed no recurrence up to this date.