Evolución clínica de dientes permanentes traumatizados: Policlínico Taguasco. 2010-2011 / Clinical evolution of permanent traumatized teeth: Polyclinic Taguasco. 2010-2011

El aumento progresivo de los traumatismos dentoalveolares su inestable evolución a mediano y corto plazo motivó la realización de esta investigación. Objetivo: identificar la evolución en el tratamiento de lesiones traumáticas en dientes permanentes en pacientes que acudieron a consulta de urgencia durante el periodo comprendido de julio a diciembre del 2010 y evolucionados de agosto hasta diciembre del 2011. Metodología: se realizó un estudio descriptivo transversal. La población de estudio que coincide con la muestra fueron 45 pacientes con traumatismo en dientes permanentes. Las variables: edad, clasificación de las lesiones traumáticas, tratamiento, periodicidad en la evolución, la evolución clínica anual de los dientes complicados y la evolución anual de forma general. Resultados: el grupo de 8-11 mostró cifras más altas y las fracturas no complicadas de la corona fueron las más numerosas. El recubrimiento pulpar fue el tratamiento de urgencia más usado. Se encontraron signos de afección clínica en la evolución anual de algunos pacientes. Los pacientes que mantuvieron una periodicidad completa en su tratamiento evolucionaron de forma satisfactoria. Conclusiones: los pacientes que tuvieron fracturas más complicadas presentaron signos de afección clínica y aquellos que mantuvieron una periodicidad en el tratamiento tuvieron una evolución satisfactoria(AU)

The progressive increasement of dentoalveolar traumas, its unsteady evolution in middle and short term motivated the realization of this investigation. To identify the evolution of traumatic lesions in permanent teeth in patients who came to the emergency room from July to December 2010 and evolved from August to December 2011. Methodology: a transversal descriptive study was carried out. The study population which coincides with the sample was 45 patients with trauma in permanent teeth. The variables: age classification of traumatic lesions, treatment, evolution, yearly clinical evolution. Results: the group 8 to 11 showed higher numbers and the non-complicated fractures of the crown were the most frequent. The pulpar covering was the most used emergency treatment. Signs of clinical affectations in the yearly evolution of some patients were found. The patients with a complete follow up of the treatment evolved satisfactorily. Conclusions: The patients who had more complicated fractures showed signs of clinical affectations(AU)

Effects of root canal irrigants on the push-out strength and hydration behavior of accelerated mineral trioxide aggregate in its early setting phase.

INTRODUCTION: The purpose of this study was to evaluate the effects of endodontic irrigants on the push-out strength and hydration behavior of accelerated mineral trioxide aggregate (MTA) in its early setting phase. METHODS: In an in vitro perforation model, MTA with or without 10% CaCl(2) was condensed and allowed to initial set for 10 minutes. The samples were divided into four groups (n = 10) to be immersed into either 3.5% sodium hypochlorite (NaOCl) or 2% chlorhexidine gluconate (CHX) for 30 minutes and then allowed to set for 48 hours. In the control group, a wet cotton pellet was placed over MTA. The maximum force applied to the set MTA mixture before dislodgement was recorded. Irrigant-treated surfaces were examined using a scanning electron microscope (SEM). Chemical elements of these surfaces were also analyzed by energy dispersive x-ray spectroscope (EDS). RESULTS: The push-out strength of group A1 (NaOCl-treated accelerated MTA) was the highest of all groups. When compared with nonaccelerated MTA, CaCl(2)-accelerated MTA showed significantly higher push-out strength (p < 0.05). NaOCl-treated groups showed significantly higher push-out strength than CHX-treated groups (p < 0.05). Scanning electron microscopic examination and EDS analysis showed that the formation of calcium hydroxide crystals on accelerated MTA exposed to NaOCl was increased compared with those of the control group. CONCLUSION: These findings imply that the use of accelerated MTA under the NaOCl irrigation was effective in perforation repair without altering its hydration behavior even in the early setting phase.

Calcitonin, sodium alendronate and high intensity laser in the treatment of traumatized teeth: a preliminary study.

The aim of this study was to evaluate the influence of erbium:yttrium-aluminum-garnet (Er:YAG) laser compared with traditional treatment on dentin permeability to calcitonin and sodium alendronate. Forty bovine roots were sectioned and divided into eight groups. Groups 1 and 2 (G1/G2) were immersed in saline solution; G1T/G2T were immersed in ethylene diamine tetra-acetic acid plus sodium lauryl ether sulfate (EDTA-T) and sodium hypochlorite (NaOCl); G1I/G2I were irradiated with Er:YAG laser (2.94 microm, 6 Hz, 40.4 J/cm(2)); G1TI/G2TI were immersed in EDTA-T, NaOCl and subjected to Er:YAG irradiation. After 4 h the radioactivity of the saline solution was measured. Statistical analysis revealed a significant difference (P < 0.05) when the groups treated with EDTA-T and NaOCl followed by Er:YAG laser irradiation were compared with the groups treated with EDTA-T only and with the groups that received no treatment. Er:YAG laser associated with traditional procedures significantly increased the diffusion of calcitonin and sodium alendronate through dentin. All groups showed calcitonin and sodium alendronate diffusion.

Mineral trioxide aggregate as repair material for furcal perforation: case series.

The purpose of treating furcal perforation is to seal the artificial communication between the endodontic space and the periradicular tissue to prevent alveolar bone resorption and damage to the periodontal ligament. These complications are not infrequent in cases of furcal and/or old perforations, which show a worse prognosis than fresh, small, coronal, and apical perforations. Mineral trioxide aggregate (MTA) is widely used to seal perforations because of its biocompatibility and sealability. Ten cases of furcal perforation were selected at the department of Endodontics, University of Florence. All the perforations were cleaned with NaOCl, EDTA, and ultrasonic tips and sealed with MTA without internal matrix. Finally, the teeth were endodontically treated and coronally restored. Clinical and radiographic follow-ups were done at 6 months, 1 year, 2 years, and 5 years. After 5 years, the absence of periradicular radiolucent lesions, pain. and swelling along with functional tooth stability indicated a successful outcome of sealing perforations in 9 out of 10 teeth. One patient dropped out of the study after the 1-year follow-up and could not be contacted for further recalls. The results confirm that MTA without matrix provides an effective seal of root perforations and clinical healing of the surrounding periodontal tissue.

Effect of dentin preparation and acid etching on the sealing ability of glass ionomer and composite resin when used to repair furcation perforations over plaster of Paris barriers.

Access openings and furcation perforations were prepared in 60 human extracted teeth and randomly divided into four equal groups. Plaster of Paris barriers were created in all perforations. The defects were obturated using either glass ionomer or composite resin with or without acid etching of the dentin. The pulp chambers and access openings were filled with composite resin. After immersion in 2% methylene blue solution for 2 weeks, the teeth were sectioned longitudinally and dye penetration was measured under a stereomicroscope using the NIH Image 1.47 Macintosh program. The results indicated that light-cured glass ionomer provided a significantly better seal than did the light-cured composite resin with or without dentin preparation and acid etching. The glass ionomer allowed significantly less dye penetration when used on etched dentin than it did on nonetched dentin.