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2
Barodontalgias, dental and orofacial barotraumas: a survey in Swiss divers and caisson workers.气压性牙痛、牙齿及口腔颌面气压伤：对瑞士潜水员和沉箱工人的一项调查。
Swiss Dent J. 2014;124(5):510-9. doi: 10.61872/sdj-2014-05-01.
3
Predictors for the development of temporomandibular disorders in scuba divers.水肺潜水员颞下颌关节紊乱病发生的预测因素。
J Oral Rehabil. 2014 Aug;41(8):573-80. doi: 10.1111/joor.12178. Epub 2014 Apr 28.
4
Microleakage of class V resin composites using various self-etching adhesives: an in vitro study.使用各种自酸蚀粘结剂的V类树脂复合材料微渗漏：一项体外研究。
J Contemp Dent Pract. 2013 Jan 1;14(1):51-5. doi: 10.5005/jp-journals-10024-1269.
5
The influence of pressure changes on endodontically treated teeth during simulated dives.压力变化对模拟潜水期间根管治疗牙的影响。
Int Endod J. 2012 Jan;45(1):57-62. doi: 10.1111/j.1365-2591.2011.01947.x. Epub 2011 Sep 8.
6
Diving dentistry: a review of the dental implications of scuba diving.潜水牙医学：水肺潜水的牙科影响综述。
Aust Dent J. 2011 Sep;56(3):265-71. doi: 10.1111/j.1834-7819.2011.01340.x. Epub 2011 Jul 10.
7
In vivo and in vitro evaluations of microleakage around Class I amalgam and composite restorations.Ⅰ类银汞合金和复合树脂修复体周围微渗漏的体内与体外评估。
Oper Dent. 2010 Nov-Dec;35(6):641-8. doi: 10.2341/10-065-L.
8
Fracture of a sound tooth in a pilot under hypobaric conditions.低压环境下飞行员完好牙齿的骨折。
Aviat Space Environ Med. 2010 Jul;81(7):691-3. doi: 10.3357/asem.2754.2010.
9
Barodontalgia: what have we learned in the past decade?高空牙痛：过去十年我们学到了什么？
Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2010 Apr;109(4):e65-9. doi: 10.1016/j.tripleo.2009.12.001.
10
Dental restoration dislodgment and fracture during scuba diving: a case of barotrauma.潜水过程中牙齿修复体的移位和折断：一例气压伤病例
J Am Dent Assoc. 2009 Sep;140(9):1118-21. doi: 10.14219/jada.archive.2009.0338.

不同压力对汞合金和复合树脂修复体抗折性及微渗漏的影响。

Impact of various pressures on fracture resistance and microleakage of amalgam and composite restorations.

作者信息

Shafigh Elnaz, Fekrazad Reza, Beglou Amir Reza

机构信息

Operative Dentistry Department, Faculty of Dentistry, AJA University of Medical Sciences, Tehran, Iran.

Department of Periodontology, Dental Faculty - Laser Research Centre in Medical Sciences, AJA University of Medical Sciences.

出版信息

Diving Hyperb Med. 2018 Sep 30;48(3):168-172. doi: 10.28920/dhm48.3.168-172.

DOI:10.28920/dhm48.3.168-172
PMID:30199889
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6205866/
Abstract

BACKGROUND

Pressure changes can influence dental restorations especially among divers. The aim of the current study was to evaluate the fracture resistance and microleakage of mesio-occluso-distal (MOD) amalgam and composite restorations undergoing pressure changes via diving and aviation simulation.

METHODS

For the fracture resistance test, 60 sound maxillary premolar teeth were randomly allocated to two groups. Each group was then divided into three subgroups (n = 10) for simulating scuba-diving (pressure cycle to 203 kPa, 2 bar), flight (50.6 kPa, 0.5 bar), and control (atmospheric pressure). The teeth underwent pressure cycles for one month and then the fracture resistance test was conducted on them using the Instron testing machine. Microleakage scores were afterwards recorded by using a 2% methylene blue dye for 24 hours.

RESULTS

Composite restorations showed significantly higher fracture resistance values compared to the amalgam group (P < 0.05). The control group had significantly higher fracture resistance values compared to the dive group, whereas there was no significant difference between the control group and the flight group (P = 0.083). No significant difference in the level of microleakage was observed between restoration materials or pressure cycles (P > 0.05).

CONCLUSIONS

Composite restorations showed better fracture resistance compared to the amalgam group. However, diving pressure cycles demonstrated adverse effects on the fracture resistance values of both restorative materials.

摘要

背景

压力变化会影响牙齿修复体，尤其是在潜水员中。本研究的目的是通过潜水和航空模拟来评估近中-咬合-远中（MOD）银汞合金和复合树脂修复体在压力变化下的抗折强度和微渗漏情况。

方法

在抗折强度测试中，将60颗完好的上颌前磨牙随机分为两组。然后每组再分为三个亚组（n = 10），分别模拟水肺潜水（压力循环至203 kPa，2 bar）、飞行（50.6 kPa，0.5 bar）和对照（大气压）。牙齿进行一个月的压力循环，然后使用Instron试验机对其进行抗折强度测试。之后使用2%亚甲蓝染料24小时来记录微渗漏评分。

结果

与银汞合金组相比，复合树脂修复体的抗折强度值显著更高（P < 0.05）。与潜水组相比，对照组的抗折强度值显著更高，而对照组与飞行组之间无显著差异（P = 0.083）。在修复材料或压力循环之间，未观察到微渗漏水平的显著差异（P > 0.05）。

结论

与银汞合金组相比，复合树脂修复体表现出更好的抗折强度。然而，潜水压力循环对两种修复材料的抗折强度值均显示出不利影响。