RESUMO Este relato de caso clínico descreve a reabilitação com implantes para o tratamento da reabsorção radicular patológica devido à movimentação ortodôntica inadequada em espaço protético reduzido, por meio implante imediato e carga imediata, pela técnica da cirurgia guiada por computador e uso da própria coroa dentária, em paciente de 21 anos. A exodontia atraumática dos incisivos laterais superiores direito e esquerdo foi realizada, em seguida realizou-se a instalação imediata dos implantes osseointegráveis, utilizando a técnica de cirurgia guiada por computador. Os próprios dentes da coroa foram usados na reabilitação estética e funcional imediata. A conclusão do tratamento resultou em sucesso funcional e estético com acompanhamento de 27 meses sem intercorrências. Os procedimentos incluídos neste complexo tratamento de reabilitação na zona estética foram adequados e essenciais para a manutenção do contorno e espessura dos tecidos moles e duros garantindo a excelência na reabilitação.

ABSTRACT This clinical report describes the implant rehabilitation for the treatment of pathological roots resorption due to inadequate orthodontic movement in prosthetic space reduced by means of load and immediate implants, computer-guided surgery and use of the own tooth crown in a 21-year-old-patient. The atraumatic exodontics of the right and left upper lateral incisors was performed, and then immediate placement of osseointegrated implants using the computer guided surgery technique. The crown teeth itself was used in the immediate aesthetic and functional rehabilitation. Completion of the treatment resulted in a functional and aesthetic successful outcome and a 27 months follow-up presented uneventful. The procedures included in this complex rehabilitation treatment in the esthetic zone were appropriate and essential for the maintenance of the soft and hard tissues contour and thickness ensuring the excellence in rehabilitation.

Abstract Purpose: To evaluate the influence of subcutaneous injection nicotine in osseointegration process on different implant surfaces. Methods: Twenty-two male rabbits were distributed into two groups according to the subcutaneous injections: (1) nicotine 3 mg/day/kg and (2) 0.9 % NaCI 3 mL/day/kg, three times a day; subgroups were then designated-machined and anodized implants were placed in the right and left tibia bones, respectively. The animals were submitted euthanasia after periods of eight weeks to determine nicotine and cotinine levels, alkaline phosphatase and biomechanical analysis. Results: The plasmatic levels of nicotine and cotinine were 0.5 ± 0.28 ng/mL and 9.5 ± 6.51 ng/mL, respectively. The alkaline phosphatase analyses in blood levels in control group were observed 40.8 ± 11.88 UI/L and 40.75 ± 12.46 UI/L, for the surfaces machined and anodized, respectively. In the test group was observed levels 37.9 ± 4.84 UI/L, for both implant surfaces. No significant differences were observed between control and test groups and between the implant surfaces regarding alkaline phosphatase blood levels. For biomechanics, no significant differences were observed in control group between the machined (25±8.46 Ncm) or anodized (31.2 ± 6.76 Ncm) implants. However, the treatment with nicotine induced higher torque than control in both machined (38.3 ± 13.52 Ncm) and anodized (35.5 ± 14.17 Ncm) implants, with p = 0.0024 and p = 0.0121, respectively. Conclusion: Subcutaneous injection of nicotine following implant insertion didn’t have effect on osseointegration, independently from the implant surface.

ABSTRACT PURPOSE : To evaluate a modified experimental model for medication-related osteonecrosis of the jaw (MRONJ) through the upper right central incisor extraction followed by intravenous bisphosphonate administration. METHODS: Forty five rats underwent the upper right central incisor tooth extraction were divided in 2 groups: Group I - experimental group, 30 rats received an intravenous administration protocol of zoledronic acid 35μg/kg into the tail vein every two weeks, totalizing four administrations, during eight weeks of administration, previously the extraction, and Group II - control group, 15 rats didn't received any medication before extraction. The groups were subdivided in postoperative periods: 14/28/42 days. Clinical analysis and microtomography were performed to verify the presence of osteonecrosis. In addition, descritive histological analysis of hematoxylin-eosin stained sections was performed to evaluate the presence of osteonecrosis or necrotic foci. RESULTS: Twelve (40%) rats, from experimental group, showed clinical signs of MRONJ (p=0.005), however, all samples showed imaginologic findings like osteolysis and loss of integrity of the cellular walls (p≤0.001). Microscopic evaluation revealed osteonecrosis areas with microbial colonies and inflammatory infiltrate (p≤0.001). In the control group, all animals presented the chronology of a normal wound healing. CONCLUSIONS: The presence of medication-related osteonecrosis of the jaw after maxillary central incisor extraction in rats. This new experimental model may be considered an option for the study of MRONJ.

INTRODUÇÃO: A dor é definida como uma experiência desagradável, sendo o controle da dor pós-operatória um grande desafio na área da saúde. OBJETIVO: Comparar a eficácia da dipirona e do paracetamol no controle da dor pós-operatória após exodontia de terceiros molares inclusos. MATERIAL E MÉTODO: Foram selecionados 30 pacientes da Disciplina de Cirurgia da Faculdade de Odontologia de Araçatuba - UNESP, que necessitavam extrair os terceiros molares inclusos. Desses, 15 receberam dipirona (Grupo I) e outros 15 receberam paracetamol (Grupo II) no pós-operatório. Todos os pacientes foram tratados, no pré-operatório, uma hora antes do procedimento cirúrgico, com dexametasona 4 mg e amoxicilina 1 grama. A intensidade da dor foi avaliada pelos pacientes por meio de escala visual analógica, em um período pós-operatório de 48 horas, em intervalos de 6 horas. Os critérios de exclusão foram: presença de desordens sistêmicas, hipersensibilidade medicamentosa, gestação, lactação e contraindicações locais. Os escores obtidos foram submetidos ao teste de Mann-Whitney (α = 0,05) para comparação das intensidades de dor em intervalos de 6 horas, nas 24 horas iniciais, nas 24 horas finais e no período total de 48 horas. RESULTADO: Não houve diferença estatística entre os analgésicos estudados nos intervalos de 6 horas; entretanto, nas 24 horas finais e nas 48 horas totais de observação, o Grupo I apresentou valores médios menores, estatisticamente significantes, quando comparado ao Grupo II. CONCLUSÃO: A eficácia analgésica da dipirona foi superior à do paracetamol.

INTRODUCTION: The pain is defined as an unpleasant experience, and control of postoperative pain a great challenge in healthcare. OBJECTIVE: To compare the efficacy of Dipyrone and acetaminophen in postoperative pain after third molar surgery. MATERIAL AND METHOD: Thirty patients of the Discipline of Surgery of School of Dentistry of Araçatuba - UNESP, that needed to extract their third included molars, were selected. Among these, 15 received Dipyrone (group I) and the other received acetaminophen (group II) in the postoperative. All patients were treated pre-operatively with dexamethasone 4 mg and amoxycillin 1 g, one hour before surgery. Pain intensity was evaluated by a visual analogue scale by forty eight hours postoperative period and in intervals of six hours. The exclusion criteria were: presence of systemic disorders, drugs hypersensitivity, pregnant, lactic and local contraindications. The scores obtained were submitted to the Mann-Whitney test (p < 0,05) for comparison of the pain intensity in the 6 hours intervals, in the initial 24 hours, in the last 24 hours and in the total period of 48 hours. RESULT: There was no statistical difference among the analgesics in the 6 hours intervals, however, in the last 24 hours and in the total period of 48 hours, the group I presented smaller medium values, significant statistically, when compared to group II. CONCLUSION: The analgesic efficacy of dipyrone was superior to paracetamol.