Influence of Water Cooling on Root Surface Temperature Generated During Post Space Preparation

Lipski, Mariusz; Mrozek, Jerzy; Droździk, Agnieszka

doi:10.1016/j.joen.2010.01.005

Cited by 9 publications

(22 citation statements)

References 15 publications

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“…20,21 Moreover, the method has been used to evaluate temperature changes during internal bleaching and post preparation. 22,23 Finally, it has been shown that interobserver variation in measuring absolute temperatures is large. However, the interobserver variation is small when measuring temperature differences between two sides, even among inexperienced users (Christensen et al, personal communication, abstract presented at the European Academy of DentoMaxilloFacial Radiology (EADMFR) meeting 2010, Istanbul, Turkey).…”

Section: Introductionmentioning

confidence: 99%

Thermography as a quantitative imaging method for assessing postoperative inflammation

Christensen

Matzen²,

Væth³

et al. 2012

Dentomaxillofacial Radiology

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Objective: To assess differences in skin temperature between the operated and control side of the face after mandibular third molar surgery using thermography. Methods: 127 patients had 1 mandibular third molar removed. Before the surgery, standardized thermograms were taken of both sides of the patient's face using a Flir ThermaCam TM E320 (Precisions Teknik AB, Halmstad, Sweden). The imaging procedure was repeated 2 days and 7 days after surgery. A region of interest including the third molar region was marked on each image. The mean temperature within each region of interest was calculated. The difference between sides and over time were assessed using paired t-tests. Results: No significant difference was found between the operated side and the control side either before or 7 days after surgery (p . 0.3). The temperature of the operated side (mean: 32.39 u C, range: 28.9-35.3 u C) was higher than that of the control side (mean: 32.06 u C, range: 28.5-35.0 u C) 2 days after surgery [0.33 u C, 95% confidence interval (CI): 0.22-0.44 u C, p , 0.001]. No significant difference was found between the pre-operative and the 7-day postoperative temperature (p . 0.1). After 2 days, the operated side was not significantly different from the temperature pre-operatively (p 5 0.12), whereas the control side had a lower temperature (0.57 u C, 95% CI: 0.29-0.86 u C, p , 0.001). Conclusions: Thermography seems useful for quantitative assessment of inflammation between the intervention side and the control side after surgical removal of mandibular third molars. However, thermography cannot be used to assess absolute temperature changes due to normal variations in skin temperature over time.

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Section: Introductionmentioning

confidence: 99%

Thermography as a quantitative imaging method for assessing postoperative inflammation

Christensen

Matzen²,

Væth³

et al. 2012

Dentomaxillofacial Radiology

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“…The temperature measurement method described by Lipski et al 5 was applied. To obtain dowel space preparations and temperature measurements, the specimens were fixed with the entire root surfaces exposed to air using a vice produced for this study.…”

Section: Methodsmentioning

confidence: 99%

“…Dowel space preparation involves partial removal of the root canal filling, and enlargement and shaping of the root canal space is sometimes necessary 5 . One consequence of dowel space preparation is a rise in temperature on the outer root surface 6,7 .…”

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confidence: 99%

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Infrared Thermographic Comparison of Temperature Increases on the Root Surface during Dowel Space Preparations Using Circular versus Oval Fiber Dowel Systems

Kılıç

Kılınç

et al. 2012

Journal of Prosthodontics

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“…Thermal camera has been used in the measurement of root surface temperatures in several studies. 15,28,29 Temperature measurement from the thinnest area as marked with the aid of CBCT imaging allowed identification of the maximum heat transmission areas.Filling of a single root canal using the ultrasonic device required an average time of 232.8 sec. The actual clinical conditions were properly mimicked in the study.…”

mentioning

confidence: 99%

Ultrasonik olarak aktive edilen obturasyon tekniği esnasındaki kök yüzeyi sıcaklıklarının kızılötesi termal analizi

Er¹,

Aslan²,

Üstün³

et al. 2015

Acta Odontol Turc

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OBJECTIVE: To evaluate the temperature changes on the external root surfaces of mandibular premolar teeth during ultrasonic condensation of gutta-percha in the root canal. MATERIALS AND METHOD:Ten extracted mandibular premolar teeth were selected. The roots were cut to a uniform length of 14 mm. Root canal treatments were performed using the ProTaper system, and the master apical file was a ProTaper F3 instrument. After the root canal preparations, cone-beam computed tomography images were taken to detect the thinnest dentinal area on the root. Each root was embedded in acrylic plates. For temperature measurements, the specimens were placed in a stainless steel device that was specially designed for this study. Temperature changes during obturation (warm lateral condensation using ultrasonics as the experimental group and cold lateral condensation as control) were then recorded using a thermal camera. Unpaired ttest was performed using a statistical software (α=0.01).RESULTS: There were significant differences between the groups. The mean obturation times of the specimens were 232.8 s for the experimental group and 102.5 s for the control. The mean value of the temperature increase in the experimental group was 49.96±11.12°C; and no temperature increase was recorded for control group. The maximum temperature rises was 68.9°C, and the minimum was 35.9°C. The average cooling time of all samples were 17 s and did not exceed 1 min.CONCLUSION: High temperatures that may cause hazardous effects on periodontium were observed; however, average cooling times of the samples were in normal ranges (less than 1 min). Further investigations are needed for testing different power settings. KEYWORDS: Endodontics INTRODUCTIONCold lateral condensation is a commonly preferred root canal filling technique in endodontic practice.1,2 In this technique, gutta-percha is used in conjunction with a root canal sealer in order to attain an entirely filled root canal. Although root canal filling may lack homogeneity, 3 the cold lateral condensation technique has the advantage of controlled placement of gutta-percha into the root canal. 4Heat and solvents have been used for softening and improving the adaptation of gutta-percha both to root canal walls and the cones to each other without the need for excessive forces. 5,6 A number of thermoplastic techniques have these advantages, such as continuous wave of condensation, thermo-mechanic compaction and injection of thermoplasticized gutta-percha. 2,7,8 Furthermore, the use of ultrasonically-activated spreaders as an aid for lateral condensation of gutta-percha cones has been shown to be superior to the conventional lateral condensation technique in vitro. 9,10 In endodontic practice, ultrasonic devices are used without water cooling for softening gutta-percha in root canal filling; this may result in heat generation. A greater than 10°C increase sustained for 1 min may cause irreversible bone injury and lead to resorption and ankylosis.11-13 To our knowledge, only one study has evalu...

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Influence of Water Cooling on Root Surface Temperature Generated During Post Space Preparation

Cited by 9 publications

References 15 publications

Thermography as a quantitative imaging method for assessing postoperative inflammation

Thermography as a quantitative imaging method for assessing postoperative inflammation

Infrared Thermographic Comparison of Temperature Increases on the Root Surface during Dowel Space Preparations Using Circular versus Oval Fiber Dowel Systems

Ultrasonik olarak aktive edilen obturasyon tekniği esnasındaki kök yüzeyi sıcaklıklarının kızılötesi termal analizi

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