Comparative evaluation of anesthetic efficacy of 1.8 mL and 3.6 mL of articaine in irreversible pulpitis of the mandibular molar: A randomized clinical trial.

Objective: The aim of this study was to compare the anesthetic efficacy of two volumes of articaine in conventional inferior alveolar nerve block (IANB) of mandibular molars with irreversible pulpitis, and in cases of anesthetic failure, its complementation with periodontal ligament injection (PDL).

Methods: Ninety patients with irreversible pulpitis in mandibular molars received conventional IANB with 1.8 mL or 3.

Guaiacol/β-cyclodextrin for rapid healing of dry socket: antibacterial activity, cytotoxicity, and bone repair-an animal study.

Purpose: Dry socket (DS) is one the most common and symptomatic post-extraction complications; however, no consensus on its treatment has been reached. This study aimed to develop a novel dressing material for DS containing the phenolic agent guaiacol and evaluate its biological properties.

Methods: An inclusion complex of guaiacol and β-cyclodextrin (Gu/βcd) was prepared by freeze-drying.

A randomized placebo-blind study of the effect of low power laser on pain caused by irreversible pulpitis.

This randomized placebo-blind study aimed to evaluate the effect of laser phototherapy (LPT) on pain caused by symptomatic irreversible pulpitis (SIP). Sixty patients diagnosed with SIP were randomly assigned to treatment groups (n = 15): G1 (control), G2 (laser placebo-sham irradiation), G3 (laser irradiation at 780 nm, 40 mW, 4 J/cm), and G4 (laser irradiation at 780 nm, 40 mW, 40 J/cm). Spontaneous pain was recorded using a VAS score before (T0), immediately after (T1), and 15 min after treatment (T2).

Cardiovascular effects of combined hyaluronidase and mepivacaine in dental anesthesia: A randomized clinical trial.

Purpose: To evaluate the effects of combined administration of mepivacaine with epinephrine and the diffusion agent hyaluronidase on hemodynamic and electrocardiographic parameters in healthy individuals undergoing dental surgery.

Methods: In a double-blind, split-mouth, randomized clinical trial, the cardiovascular effects induced by 2.7 mL of 2% mepivacaine with 1:100,000 epinephrine injected concomitantly with 1 mL of 75 TRU/mL hyaluronidase or placebo for inferior alveolar nerve block was evaluated in systemically healthy subjects that underwent bilateral third molar extraction in two separate sessions.

Onset and duration period of pulpal anesthesia of articaine and lidocaine in inferior alveolar nerve block.

The purpose of this prospective, randomized, double blind study was to compare the onset and duration periods of pulpal anesthesia using 2% lidocaine with 1:100,000 epinephrine, 4% articaine with 1:100,000 epinephrine and 4% articaine with 1:200,000 epinephrine in inferior alveolar nerve block (IANB). Thirty subjects received 1.8 mL of each of the three local anesthetic solutions in IANB.

Comparison of the anesthetic efficacy between bupivacaine and lidocaine in patients with irreversible pulpitis of mandibular molar.

Introduction: The purpose of this study was to compare the anesthetic efficacy of 0.5% bupivacaine with 1:200,000 epinephrine with that of 2% lidocaine with 1:100,000 epinephrine during pulpectomy in patients with irreversible pulpitis in mandibular posterior teeth.

Methods: Seventy volunteers, patients with irreversible pulpitis admitted to the Emergency Center of the School of Dentistry at the University of São Paulo, randomly received a conventional inferior alveolar nerve block containing 3.

Protective effect of CO2 laser (10.6 μm) and fluoride on enamel erosion in vitro.

The aim of this study was to analyze the effect of CO(2) laser (10.6 μm) irradiation with 5-μs pulse width in prevention of enamel erosion due to citric acid exposure in vitro. One hundred forty-four bovine enamel samples were cut into 5 × 5 × 2-mm-size slabs and polished to obtain plane surfaces.

A minimally invasive procedure for esthetic achievement: enamel microabrasion of fluorosis stains.

Esthetic alterations (such as fluorosis) that result from intrinsic dental staining in enamel and dentin can be controlled or softened by noninvasive methods such as dental bleaching or enamel microabrasion. Part of the enamel is removed during microabrasion; however, this wear is clinically insignificant and does not harm the dental structure. This article presents a case in which the microabrasion technique was used to remove fluorosis staining.

Evaluation of simulated bone lesion in the head of the mandible by using multislice computed tomography.

Unlabelled: Conventional radiography has shown limitation in acquiring image of the ATM region, thus, computed tomography (CT) scanning has been the best option to the present date for diagnosis, surgical planning and treatment of bone lesions, owing to its specific properties.

Objective: The aim of the study was to evaluate images of simulated bone lesions at the head of the mandible by multislice CT.

Material And Methods: Spherical lesions were made with dental spherical drills (sizes 1, 3, and 6) and were evaluated by using multislice CT (64 rows), by two observers in two different occasions, deploying two protocols: axial, coronal, and sagittal images, and parasagittal images for pole visualization (anterior, lateral, posterior, medial and superior).

SAPHO syndrome with temporomandibular joint ankylosis: clinical, radiological, histopathological, and therapeutical correlations.

The SAPHO syndrome is characterized by specific clinical manifestations of synovitis, acne pustulosis, hyperostosis, and osteitis. It is a rare disease with a combination of osseous and articular manifestations associated with skin lesions. We describe a patient with SAPHO syndrome of the mandible and involvement of the temporomandibular joint (TMJ ankylosis).

Hyaluronidase increases the duration of mepivacaine in inferior alveolar nerve blocks.

Purpose: To evaluate the duration of the effect of mepivacaine when hyaluronidase is injected immediately prior to the end of pulpal anesthesia.

Patients And Methods: Forty bilateral, symmetrical third molar surgeries were performed in 20 healthy patients. Inferior alveolar nerve block was induced using 2.

Validation of computed tomography protocols for simulated mandibular lesions: a comparison study.

Computed tomography is the choice technique to assess oral and maxillofacial osseous lesions because it provides hard and soft tissues visualization in one examination without superimposition of surrounding structures. This examination offers a significant advance in maxillofacial lesions detection with an excellent anatomic resolution. The aim of this research was to evaluate the validity of two protocols, in axial sections, in simulated mandibular lesions.

Onset and duration periods of articaine and lidocaine on maxillary infiltration.

Objectives: The aim of this study was to compare the onset and duration of pulpal anesthesia by maxillary infiltration using 2% lidocaine with 1:100,000 epinephrine, 4% articaine with 1:200,000 epinephrine, and 4% articaine with 1:100,000 epinephrine.

Method And Materials: Twenty healthy patients randomly received 1.8 mL of one of the three local anesthetics during operative dentistry procedures of low complexity on three maxillary posterior teeth.

Linear density analysis of bone repair in rats using digital direct radiograph.

The objective of this study was to assess bone density measurements for analysis of repairing fractures in rats using direct digital radiography under Dexamethasone effects. Thirty (30) young adult male Wistar rats were used, with an average weight of 200g, which were submitted to general anesthetics by ethyl ether. One rib of each animal was fractured by surgical technique.

[Dental anxiety in an emergency dental service].

Objective: The purpose of the study was to assess the frequency of dental anxiety and/or fear among patients in an emergency dental service.

Methods: Research was based on interviews with 252 patients, aged 18 years old and over, attended at an emergency dentistry service of São Paulo, Brazil, from August to November, 2001. Two methods were used to measure dental anxiety: the Modified Dental Anxiety Scale (MDAS) and the Gatchel Fear Scale.