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. 2021 Nov;33(7):674-678.
doi: 10.1016/j.sdentj.2020.04.011. Epub 2020 May 7.

The impact of cigarette smoking on the efficiency of local anesthesia during simple tooth extraction

Noor Mohammed Al-Noori  1 , Noor Sahban Ibraheem  1 , Mohammed Majid Abdulmunem  1
Affiliations

The impact of cigarette smoking on the efficiency of local anesthesia during simple tooth extraction

Noor Mohammed Al-Noori et al. Saudi Dent J. 2021 Nov.

Abstract

Smoking is harmful to all organs of the human body and can affect nerve response to local anesthesia.This study aimed to determine the effect of cigarette smoking on the amount and onset of local anesthesia, as well as the chief complaint (symptomatic and asymptomatic), number of cigarettes, and duration of smoking.

Materials and methods: A selective clinical case-control study carried out at the Oral Surgery Clinic of the Teaching Hospital at the College of Dentistry. One hundred and three male patients participated in the study, and they were divided into two groups (55 smokers and 48 nonsmokers). The patients received a local anesthetic agent (2% Lidocaine) in a 1.8 ml dental cartridge. The number of cartridges and the onset time of local anesthesia were detailed for each patient in a special case sheet prepared for this study.

Results: There was a statistically significant difference between the smoker and nonsmoker groups regarding the amount of local anesthetic solution (p = .041) with a higher amount needed in the smoker group; however, the onset of action showed no significant difference between the two groups (p = 0.983). The symptomatic cases in smokers needed a higher amount of local anesthesia than the asymptomatic cases with a statistically significant difference (p = 0.002). There was no relationship between daily cigarette consumption and the amount of local anesthetic solution (p = .054) and also the onset of local anesthesia (p = .938). The duration of smoking has no significant relationship with onset time (p = .480) and the amount of local anesthesia (p = .418).

Conclusion: The amount of local anesthesia used in smoker patients was higher than that in nonsmoker patients, especially if there were symptoms like pain. The duration of smoking and daily cigarette consumption had no effect on the amount and the onset of local anesthesia.

Keywords: Cigarette smoking; Dental extraction; Lidocaine; Local anesthesia.

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