ABSTRACT
Abstract The aim of this study was to evaluate the effects of different root canal filling techniques on the bond strength of epoxy resin-based sealers. Sixty single-rooted canines were prepared using ProTaper (F5) and divided into the following groups based on the root filling technique: Lateral Compaction (LC), Single Cone (SC), and Tagger Hybrid Technique (THT). The following subgroups (n = 10) were also created based on sealer material used: AH Plus and Sealer 26. Two-millimeter-thick slices were cut from all the root thirds and subjected to push-out test. Data (MPa) was analyzed using ANOVA and Tukey's test (α = 0.05). The push-out values were significantly affected by the sealer, filling technique, and root third (p < 0.05). AH Plus (1.37 ± 1.04) exhibited higher values than Sealer 26 (0.92 ± 0.51), while LC (1.80 ± 0.98) showed greater bond strength than THT (1.16 ± 0.50) and SC (0.92 ± 0.25). The cervical (1.45 ± 1.14) third exhibited higher bond strength, followed by the middle (1.20 ± 0.72) and apical (0.78 ± 0.33) thirds. AH Plus/LC (2.26 ± 1.15) exhibited the highest bond strength values, followed by AH Plus/THT (1.32 ± 0.61), Sealer 26/LC (1.34 ± 0.42), and Sealer 26/THT (1.00 ± 0.27). The lowest values were obtained with AH Plus/SC and Sealer 26/SC. Thus, it can be concluded that the filling technique affects the bond strength of sealers. LC was associated with higher bond strength between the material and intra-radicular dentine than THT and SC techniques.
Subject(s)
Humans , Root Canal Filling Materials/chemistry , Root Canal Obturation/methods , Dental Bonding/methods , Epoxy Resins/chemistry , Reference Values , Surface Properties/drug effects , Bismuth/chemistry , Materials Testing , Calcium Hydroxide/chemistry , Reproducibility of Results , Analysis of Variance , Dental Restoration Failure , Dental Pulp Cavity/drug effects , Dentin/drug effects , Gutta-Percha/therapeutic useABSTRACT
Este relato mostra um paciente de 72 anos de idade onde sua prótese total inferior sobre implantes motivou-a para usar uma prótese total fixa na maxila. Após os procedimentos de TCFC e protéticos no plano de tratamento, guias estereolitográficos foram construídos para uma colocação de implantes dentários sem levantamento de retalho. Cinco implantes foram colocados nas regiões 14, 13, 11, 22, e 24 com torque de inserção de 32 Ncm. A prótese total fixa definitiva foi entregue em até 48 horas. Após dois anos e 11 meses, não foram registradas complicações. Quando adequadamente indicada, a cirurgia virtual guiada tem se tornado uma realidade efetiva para pacientes idosos.
This case reports on a 72 years-old patient whose complete mandibular implant-supported prosthesis motivated her to use a fi xed appliance in the maxilla. After CBCT and prosthodontic procedures for treatment planning, stereolithographic guides were constructed for a flapless dental implant placement. Five implants were placed in the regions of 14, 13, 11, 22 and 24 with a 32 Ncm insertion torque. The final maxillary implant-supported prosthesis was delivered until 48 hours. After two years and 11 months, no complications were reported. When properly indicated, virtual guided surgery has become an effective possibility for elderly patients.
Subject(s)
Humans , Male , Aged , Continuity of Patient Care , Mandibular Prosthesis Implantation , Patient Satisfaction , Denture, Complete, Lower/standards , Surgery, Computer-AssistedABSTRACT
O propósito deste trabalho foi apresentar aspectos favoráveis ao uso de implantes curtos nas situações de limitações de altura e volume ósseo em mandíbulas atróficas, onde o tratamento com este tipo de implante torna-se viável. Uma paciente que optou pelo tratamento com implantes curtos, depois de uma grande procura para reabilitação de uma mandíbula com significativa perda óssea e grande instabilidade de suas próteses. Depois dos exames clínico e radiográfico, foram instalados seis implantes Titamax CM na região anterior inferior entre 33 a 43, sendo cinco implantes de tamanho 7 mm e um de 8 mm como base para a confecção de uma prótese total fixa tipo protocolo. Depois do período de espera para a osseointegração, realizou-se a reabertura e, através do aparelho Osstell, verificou-se a alta estabilidade dos implantes com o osso, pré-requisito para a garantia do sucesso na reabilitação implantossuportada. Após três meses houve a troca da prótese total convencional superior e a elaboração de uma prótese fixa protocolo inferior. Foram feitos alguns acompanhamentos semestrais e a paciente apresenta excelente resultado clínico há mais de cinco anos...
The purpose of this study is to promote the use of short implants in situations of limited height and bone volume in atrophic mandibles, whereas treatment with this type of implant becomes feasible, showing a patient that has chosen a treatment with short implants, after spending a long time in search for the best possibilities in a mandible with signifi cant bone loss and the instability of her prostheses. After clinical and radiographic examination, six Titamax CM implants were installed in the lower anterior region between 33-43, seeing that five of them were at the size of 7 mm and one of 8 mm serving as foundation for a future fixed total prosthesis. After the waiting period for osseointegration, a high stability was verified with the aid of Osstell, being a prerequisite for ensuring the successful implant-supported rehabilitation. Three months later, a conventional total prosthesis was placed along with the elaboration of a lower fixed prosthesis. Regular follow-ups were made at each six months and the clinical results are excellent after 5 years...