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Showing 4 results for Sensitivity
Prevalence of hypersensitivity to dental local anesthetic drugs in patients referred to Tehran Allergy clinic (2005-2007)
F. Akhlaghi, S. Azimi Hosseini, S.h. Mortazavi, B. Houshmand, K. Abachizadeh,
Volume 21, Issue 4 (1-2009)
Abstract

Background and Aim: According to controversies in the prevalence of hypersensitivity to dental local anesthetic drugs and patients who claim hypersensitivity to these drugs, the aim of this study was to determine the prevalence of hypersensitivity to dental amide local anesthetic drugs in patients referred to Tehran Allergy Clinic in 2005-2007.

Materials and Methods: In this Study (Review of existing data), records of 130 patients who were referred to "Tehran allergy Clinic" (2005-2007) were studied.

Results: The average age of patients was 29.5±18.8 years. 34% of cases showed positive skin reactions to at least one of the tested Lidocain concentrations and 10% of cases showed positive skin reactions to at least one of the tested Prilocain concentrations. There was a statistically significant difference in hypersensitivity to Lidocain 0.01 and 0.001 (p=0.017) and also between Lidocain 0.001 and 0.0001 (p<0.01). There was no statistically significant difference between other tested drug concentrations (p>0.05).

Conclusion: Many patients with history of hypersensitivity, show positive reaction to local dental anesthetic drugs. Prilocain hypersensitivity reactions are less than Lidocain. So application of Prilocain accompanies with less risk but its application should not be considered completely safe.


Accuracy of single periapical radiography in diagnosis of horizontal root fracture
Jalil Modaresi, Mahdi Dastorani, Fazlolah Soleymani Najafabadi, Fatemeh Ezodini,
Volume 25, Issue 1 (4-2012)
Abstract

Background and Aims: Radiographic examination is a necessary step in diagnosis of horizontal root fracture. The purpose of this study was to determine the sensitivity and specificity of single radiograph for detection of horizontal root fracture.

Materials and Methods: In this analytical-descriptive study, 30 human freshly extracted teeth were used. Using a hammer and clamp, the teeth were divided into two sections accidentally and then sections were attached together by cyanoacrylate glue. Two radiographs were taken with and without a piece of human mandibular bone. Afterward, radiographs were analyzed by three expert dentists using a slide show device.

Results: The diagnostic sensitivity and specificity of single radiograph for detection of horizontal root fracture without bone was 100%, but in radiographs of teeth with bone was 82.7% and 100%, respectively.

Conclusion: Based on the results of this study, in most cases, the horizontal root fractures can be detected by a single periapical radiograph.


Effectiveness of a desensitizing dentifrice containing potassium nitrate 5% on cervical hypersensitivity of teeth: A randomized clinical trial
Zainab Kadkhoda, Sahar Rafiei Chokami, Azam Hosseini,
Volume 30, Issue 1 (6-2017)
Abstract

Background and Aims: Cervical tooth hypersensitivity (CTH) is defined as a sharp pain of short term that occurs in dentin exposed to the oral environment. The aim of this study was to evaluate the efficacy of a desensitizing toothpaste containing potassium nitrate (Sensodyne®) for relieving of CTH, when used locally or as tooth paste.

Materials and Methods: 36 patients were enrolled in this study. They were randomly divided into three groups I) Tooth brushing without toothpaste, II) Local application of toothpaste containing potassium nitrate 5%, III) Tooth brushing with toothpaste containing potassium nitrate 5%. Assessment of CTH was done by evaporative (using air and water spray) and cold stimuli at baseline, 1, 3, and six weeks after the treatment. To compare pain changes over time, due to the interaction between the variables of the studied groups and time, one-way ANOVA was used at any time. Due to the difference of variance between groups to compare pairs of groups, Dunnett T3 test was used.

Results: During the study period, no adverse event observed. In all three groups, pain decreased gradually. Local application of toothpaste had the most favorable effect on CTH. Therefore, when compared with that of the first group, the percentage reduction in pain were statistically significant (P=0.03).

Conclusion: Local application of toothpaste containing potassium nitrate as a desensitizing ingredient is a better choice for treatment of CTH than that of application with toothbrush.


Comparison of dentinal tubules closure under the effect of carbonated nano structural hydroxyapatite toothpaste produced inside the country with fluoride toothpaste
Rahelesadat Mirseifi Nejad Naini, Alireza Daneshkazemi, Fahime Shafiee,
Volume 31, Issue 2 (9-2018)
Abstract
Background and Aims: Increased tooth sensitivity is a common dental problem. One of the mechanisms of dentin hypersensitivity treatment is blocking dentinal tubules. The aim of this study was to compare the average closing dentinal tubules affected by carbonated Nano-hydroxyapatite and fluoride toothpaste using scanning electron microscope (SEM).
Materials and Methods: The enamel of gingival buccal crown surfaces of 42 sound maxillary premolars teeth were removed until the dentin surfaces were exposed. The dentine specimens of 3×3 mm were prepared. The specimens were washed by distilled water after etching and randomly divided into 6 groups. 3 groups were interfered with the carbonated nano-hydroxyapatite toothpaste and the other three groups interfered with Colgate toothpaste in 3, 7 and 14 days. The samples were examined by SEM to check the status of dentinal tubules. Then, they were evaluated by two researchers according to the Hulsmann index. Data were analyzed by using SPSS23 software and Kruskal-Wallis statistical test. The significance level of 0.05 was considered.
Results: The amount of dentinal tubules closure by the two toothpastes was significantly different. This difference was higher in the hydroxyapatite toothpaste than fluoride which were (P=0.024, 0.004 and 0.000), respectively. There were no significant differences among the groups in 3,7 and 14 days (P=0.230, 0.069, 0.537).
Conclusion: The toothpaste containing carbonated nano structural hydroxyapatite was more successful in closing dentinal tubules than Colgate toothpaste in short period of time.

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