A novel approach to intraoral mandibular nerve anesthesia: changing reference planes in the Gow-Gates block technique. 2009

Adriana Shinagawa, and Veronica K L Chin, and Said R Rabbani, and Antonio C Campos
Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, University of São Paulo, São Paulo, Brazil. shinagawa@usp.br

OBJECTIVE The Gow-Gates technique is said to have several advantages over traditional techniques to achieve mandibular nerve anesthesia; however, its routine use is quite limited, mainly due to complications during visual alignment of reference landmarks. The purpose of this study was to verify the validity and accuracy of a new method to reach the injection site. METHODS Fifteen magnetic resonance images were captured. Distances from the ideal injection point in the condylar neck (puncture ideal) to the injection points located in the alpha and beta plane intersection (puncture Gow-Gates and puncture modified) were measured and compared. RESULTS Positive and significant (P <or= .003) Pearson correlations between landmarks and injection points confirmed the validity of the modified technique. Paired t test showed that the segment line puncture ideal-puncture modified, 5.17 mm, was 3 times shorter (P < .001) than the segment line puncture ideal-puncture Gow-Gates, 17.91 mm. As calculated by linear regression, establishing the injection point of the modified technique depended only on the anteroposterior and lateromedial condyle positions. CONCLUSIONS The modified technique proved to be valid and precise and has a determined and an effective injection site.

UI MeSH Term Description Entries
D007267 Injections Introduction of substances into the body using a needle and syringe. Injectables,Injectable,Injection
D008279 Magnetic Resonance Imaging Non-invasive method of demonstrating internal anatomy based on the principle that atomic nuclei in a strong magnetic field absorb pulses of radiofrequency energy and emit them as radiowaves which can be reconstructed into computerized images. The concept includes proton spin tomographic techniques. Chemical Shift Imaging,MR Tomography,MRI Scans,MRI, Functional,Magnetic Resonance Image,Magnetic Resonance Imaging, Functional,Magnetization Transfer Contrast Imaging,NMR Imaging,NMR Tomography,Tomography, NMR,Tomography, Proton Spin,fMRI,Functional Magnetic Resonance Imaging,Imaging, Chemical Shift,Proton Spin Tomography,Spin Echo Imaging,Steady-State Free Precession MRI,Tomography, MR,Zeugmatography,Chemical Shift Imagings,Echo Imaging, Spin,Echo Imagings, Spin,Functional MRI,Functional MRIs,Image, Magnetic Resonance,Imaging, Magnetic Resonance,Imaging, NMR,Imaging, Spin Echo,Imagings, Chemical Shift,Imagings, Spin Echo,MRI Scan,MRIs, Functional,Magnetic Resonance Images,Resonance Image, Magnetic,Scan, MRI,Scans, MRI,Shift Imaging, Chemical,Shift Imagings, Chemical,Spin Echo Imagings,Steady State Free Precession MRI
D008297 Male Males
D008335 Mandibular Condyle The posterior process on the ramus of the mandible composed of two parts: a superior part, the articular portion, and an inferior part, the condylar neck. Condyle, Mandibular,Condyles, Mandibular,Mandibular Condyles
D008340 Mandibular Nerve A branch of the trigeminal (5th cranial) nerve. The mandibular nerve carries motor fibers to the muscles of mastication and sensory fibers to the teeth and gingivae, the face in the region of the mandible, and parts of the dura. Alveolar Nerve, Inferior,Auriculotemporal Nerve,Buccal Nerve,Deep Temporal Nerve,Lateral Pterygoid Nerve,Masseteric Nerve,Mental Nerve,Mylohyoid Nerve,Auriculotemporal Nerves,Buccal Nerves,Deep Temporal Nerves,Inferior Alveolar Nerve,Inferior Alveolar Nerves,Lateral Pterygoid Nerves,Mandibular Nerves,Masseteric Nerves,Mental Nerves,Mylohyoid Nerves,Nerve, Auriculotemporal,Nerve, Buccal,Nerve, Deep Temporal,Nerve, Inferior Alveolar,Nerve, Lateral Pterygoid,Nerve, Mandibular,Nerve, Masseteric,Nerve, Mental,Nerve, Mylohyoid,Pterygoid Nerve, Lateral,Pterygoid Nerves, Lateral,Temporal Nerve, Deep,Temporal Nerves, Deep
D009407 Nerve Block Interruption of NEURAL CONDUCTION in peripheral nerves or nerve trunks by the injection of a local anesthetic agent (e.g., LIDOCAINE; PHENOL; BOTULINUM TOXINS) to manage or treat pain. Chemical Neurolysis,Chemodenervation,Nerve Blockade,Block, Nerve,Blockade, Nerve,Blockades, Nerve,Blocks, Nerve,Chemical Neurolyses,Chemodenervations,Nerve Blockades,Nerve Blocks,Neurolyses, Chemical,Neurolysis, Chemical
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000328 Adult A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available. Adults
D000766 Anesthesia, Dental A range of methods used to reduce pain and anxiety during dental procedures. Dental Anesthesia

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