Risk Factors of Inferior Alveolar Nerve Block Failure: a Dental Student-centered Study

Study Overview
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Brief Summary
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Inferior alveolar nerve block anesthesia is one of the most commonly used regional block anesthesia in dentistry. The factors that determine the success of this type of anesthesia which is applied so frequently, are not reported in the literature. It is to reveal and evaluate patient and dentist-based factors, especially in anesthesia applied by trainee dentists who have just learned this anesthesia block.

Detailed Description
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In this study, the investigators are going to observe 200 IANB anesthesia in our clinic. The investigators will evaluate the class, right/left handed, gender and experience on inferior alveolar nerve block of dental student. The criteria the investigators will evaluate for the patient are as follows; gender, body mass index, ramus height, left/right side, and maximum mouth opening amount. The criterion for the success of anesthesia are lost lip sensation within 10 minutes, no complication related to anesthesia.

Official Title
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Risk Factors of Inferior Alveolar Nerve Block Failure: a Dental Student-centered Study

Conditions
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Anesthesia, Local

Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: having an indication of mandibular first or second molar extraction, being between 18 and 50 years old, not having any nerve or nerve-related disease, having a mouth opening 35 millimeters and above, not having an infected or inflamed tooth for extraction, being cooperative, non-allergic to articaine being right-handed (for dental-students) being intern (for dental-students) Exclusion Criteria: anesthesia-related complications, more than twice the needed needle insertion wishing to quit the study

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 50 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Observational Group<br>The investigators are going to observe the risk factors about inferior alveolar nerve block anesthesia. | |

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Patrient-BMI index | Ask the patrients their weight and height then note that as their bmi index.This note guides us amount of bichat and how it affects the failure of block anesthasia. | after 5 minutes, patrients come to our clinic and sit on the dental unit. | 
| Patrient-Height of mandibular ramus | measuring of mandibular ramus on panoromic radyography from mandibular angulus to condylar head. | after 5 minutes, patrients come to our clinic and sit on the dental unit. | 
| Patrient-Gender | attending patrients sex | after 5 minutes, patrients come to our clinic and sit on the dental unit. | 
| Patrient-Maximum mouth opening | before the anesthasia, make the patrients open their mouth maximum then measure it from lower incisors incisal edge to upper incisors incisal edge. | after 5 minutes, patrients come to our clinic and sit on the dental unit. | 
| Gender | attending dental studens sex | after 5 minutes, patrients come to our clinic and sit on the dental unit. | 
| Student-Class | attending dental students in which period for the explanation of their experiment level | after 5 minutes, patrients come to our clinic and sit on the dental unit. | 
| Dental student-Mandibular nerve block experience | attending dental students in which period for the explanation of their experiment level | after 5 minutes, patrients come to our clinic and sit on the dental unit. | 
| Which hand does dental student use ? | The investigators wonder how the operator's being left-handed or right-handed will affect the success of anesthesia. | after 5 minutes, patrients come to our clinic and sit on the dental unit. | 
| which side for the mandibular block anesthasia | Does the side of anesthesia according to the hand used affect its success? | after 5 minutes, patrients come to our clinic and sit on the dental unit. | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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anesteshia failure, mandibular nerve, dental student