RESUMEN
Introduction: Ultrasonic vibration for metallic post removal seems to be a unanimous choice between endodontists and general practitioners for providing the best results and having the highest safety. This study compared the time required by ultrasonic vibration for removing metallic post (MP) when 1 or 2 ultrasonics devices are used. Materials and Methods: One hundred and fifteen teeth with MPs from 105 patients, indicated for nonsurgical endodontic retreatment were divided into 2 groups according to the number of ultrasonic devices used (G1-1 device) and (G2-2 devices). In G1, the MP was worn with a transmetal bur, alongside the wear of the cement line (around 2 mm deep). Then, an ultrasonic tip attached to an ultrasonic unit, with a power of 100% was activated at the level of the post, with constant water spray at a level of 1 mm above the axial surface of the tooth. The position of the tip was changed between buccal and lingual surfaces every 10 seconds until the MP was removed. In G2 the same procedures were performed as described in G1, but two ultrasonic tips were activated simultaneously at buccal and lingual surfaces until the MP was removed. The vibration time necessary for removing each MP was recorded using a chronometer. Results: The mean time was 131.10±29.68 seconds (mean±standard error of the mean) for MP removal using one ultrasonic device, and 24.86±6.88 seconds for two devices. The time required for MP removal using two ultrasonic devices was significantly less than when using one ultrasonic device (P<0.001). Conclusion: The technique with 2 ultrasonic devices proved to be more efficient than the one using only 1 ultrasonic device.
RESUMEN
Bioceramic cements used for filling root canals in cases of endo-perio lesion of endodontic origin seem to be promising due to having the potential of promoting faster and more predictable healing of the periapical lesion as they stimulate osteogenesis. An effective treatment plan depends on the precise diagnosis of endo-perio lesions. The origin of an infection, being exclusive to the root canal, from the periodontium, or both, is extremely important for devising the treatment plan. In both cases, no clinical evidence of periodontal disease (bleeding, calculus, etc.) was found; however, primary endodontic lesions with the possibility of drainage through the gingival crevice were present. In addition to the disinfection strategies used during the root canal treatments, the bioceramics Bio C Sealer, Bio C Repair and Bio Root RCS were used to fill in the root canals. Both cases presented an impressive bone gain within 8 months for case 1 and 5 months for case 2. Regarding case 1, in the palatal root canal an apical plug with a bioceramic repair cement was used. Based on the literature studied, it can be concluded that after adequate disinfection of the root canals, using bioceramic cements in filling the root canals shows the potential of supporting capabilities in remineralization of osteolytic lesions in endo-perio diseases.
RESUMEN
As lesões traumaticas dos dentes e de suas estruturas são problemas funcionais e estéticos, que necessitam de atendimento imediato por parte do profissional . Numa revisão da literatura os autores buscaram informações com o objetivo de melhor orientar o profissional no entendimento das manifestações do tecido pulpar e ligamento periodontal frente aos diferentes tipos de traumatismos.
Asunto(s)
Pulpa Dental , Ligamento Periodontal , Traumatismos de los DientesRESUMEN
Foi avaliada, por meio de microscopia óptica, a reação inflamatória periapical em dentes de cães frente a 3 técnicas diferentes de obturação de canal. Dentes de cães foram devidamente instrumentados, e os canais obturados pelas técnicas de injeção de guta-percha termoplastificada a baixa temperatura (Sistema Ultrafil), com e sem o uso de cones de guta-percha seccionados na região apical, e técnica de obturação convencional, acorde PAIVA e ANTONIAZZI (1991), sem preparo apical. As observações histopatológicas do tecido periapical, aos 90 dias, permitiu afirmar que a técnica de obturação que utilizou o cone de guta-percha seccionado e preenchimento do canal com Sistema Ultrafil, apresentou consolidação do processo de reparação , enquanto que, nas outras duas técnicas, a reparação foi incompleta
Asunto(s)
Animales , Perros , Gutapercha , Obturación del Conducto Radicular/veterinaria , Tejido Periapical/efectos de los fármacos , Obturación del Conducto Radicular/métodos , Preparación del Conducto RadicularRESUMEN
O objetivo deste trabalho é estudar o mecanismo de ação do hidróxido de cálcio, substância muito importante na terapêutica endodôntica, além de explorar algumas de suas propriedades essenciais como antimicrobiana, pH e solubilidade