RESUMEN
PURPOSE: This study evaluated the immediate bonding effectiveness of five self-etch adhesive systems bonded to dentin. MATERIALS AND METHODS: The microtensile bond strength of five self-etch adhesives systems, including one two-step and four one-step self-etch adhesives to dentin, was measured. Human third molars had their superficial dentin surface exposed, after which a standardized smear layer was produced using a medium-grit diamond bur. The selected adhesives were applied according to their respective manufacturer's instructions for µTBS measurement after storage in water at 37°C for 24 h. RESULTS: The µTBS varied from 11.1 to 44.3 MPa; the highest bond strength was obtained with the two-step self-etch adhesive Clearfil SE Bond and the lowest with the one-step self-etch adhesive Adper Prompt L-Pop. Pretesting failures mainly occurring during sectioning with the slow-speed diamond saw were observed only with the one-step self-etch adhesive Adper Prompt L-Pop (4 out of 18). CONCLUSIONS: When bonded to dentin, the self-etch adhesives with simplified application procedures (one-step self-etch adhesives) still underperform as compared to the two-step self-etch adhesive Clearfil SE Bond.
RESUMEN
This case report describes the treatment of a double root fracture of a lateral mandibular incisor and its follow- up over 3.5 years. The reason for the consultation was a tooth mobility following a fall that had occurred 2 days earlier. A test of pulp vitality for tooth 42 was positive. Periodontal probing at the level of the gingival sulcus confirmed the intactness of the epithelial attachment. Retro-alveolar radiographic examination revealed a double root fracture of tooth 42. A semi-rigid extra-coronal splinting was performed and a light grinding of the incisal edge of tooth 42 was then carried out in light of the dislocation of the coronal fragment, and the occlusion was checked with a strip of articulating paper. The outcomes at 6 months revealed that pulp vitality was still preserved, consolidation of the apical fracture had occurred, and the coronal root fracture was starting to heal. The 1-year, 2-year and 3-year follow ups revealed preserved pulp vitality, an absence of a fracture line in apical images, and no root resorption. This case report provides evidence for the preservation of vitality in the setting of a double root fracture.
Asunto(s)
Oclusión Dental Traumática/complicaciones , Incisivo/patología , Resorción Radicular/etiología , Adulto , Legrado/métodos , Oclusión Dental Traumática/terapia , Estudios de Seguimiento , Cementos de Ionómero Vítreo/química , Humanos , Incisivo/lesiones , Masculino , Maloclusión Clase I de Angle/complicaciones , Maloclusión Clase I de Angle/terapia , Ferulas Oclusales , Diseño de Aparato Ortodóncico , Grupo de Atención al Paciente , Tratamiento del Conducto Radicular/métodos , Resorción Radicular/terapia , Movilidad Dentaria/etiología , Movilidad Dentaria/terapiaRESUMEN
AIM: The aim of the present study was to assess knowledge of, and management attitude of dentists regarding dentin hypersensitivity. MATERIALS AND METHODS: The study involved all the dentists from private and public sectors, exerting in Senegal. The following data were requested from the surveyed dentists using an anonymous questionnaire; sociodemographics (i.e. age, gender, area of activity, etc.) and knowledge on triggering factor, type of pain, diagnosis, preventive and curative procedures. RESULTS: Out of the 238 dentists who received the questionnaire, 68.9% returned properly filled forms. They were 116 males and 48 females with a mean age of 41.99 ± 8.50 years. Eighty three percent of the participants had a good understanding of the characteristics of pain related to DH and 92% recognized chemical and thermal stimuli as triggering factor while mechanical stimulus was not evoked. Many responders (90.9%) did not have any idea of the mechanism for pain transmission across the dentin. Regarding diagnosis technique, 68% use mechanical stimuli to elicit DH pain. Regarding management procedure, the use of desensitizing tooth paste is the mostly chosen option followed by professional topical application of fluoride. More than 1/3rd of the surveyed dentists confess resorting to root canal to manage DH. CONCLUSION: We recommend incorporation of basic science knowledge on orofacial pain and competencies to manage painful conditions like dentin hypersensitivity. Also, health regulatory institutions should make continuing dental education a requirement to preserve the dental licensure.