subject 교정치료 중 구강관리시 불소는 금물: NiTi wire의 손상
writer 관리자
email
date 18-12-05 11:56
hit 1,537

본문

교정치료과정에서 구강관리는 매우 중요합니다.


교정장치료 인해 구강관리가 어렵고 따라서 우식(충치)의 위험도 높기 때문입니다.


주의해햐 할 점은 교정치료 중 불소가 함유된 치약이나 가글제등은 사용하지 않는 것이 좋다는 것입니다.


불소가 교정용 NiTi wire의 기계적 성질에 영향(부식등)주어 의도치 않은 치료결과를 낳을 수 있기 때문입니다.


아래는 불소가 교정용 나이타이에 미치는 영향에 대한 연구입니다.

 

 

2018 Mar 1;19(3):283-286.

Evaluation of the Effects of Fluoride Prophylactic Agents on Mechanical Properties of Nickel Titanium Wires using Scanning Electron Microscope.

Abstract

INTRODUCTION:

Orthodontic treatment these days is increasing in demand, and therefore, it is relatively imperative for the orthodontist to prescribe the use of fluoride-containing products, such as mouthwashes and gels, to help prevent dental caries and maintain healthy oral health. The aim of the study was to assess and evaluate the effects of fluoride prophylactic agents on mechanical properties of nickel titanium (NiTi) wires during orthodontic treatment using scanning electron microscope (SEM).

MATERIALS AND METHODS:

We used the commercially available round preformed NiTi orthodontic archwire (3M company) and three different mouthwash solutions, i.e., Phos-Flur gel (1.1% sodium acidulated phosphate fluoride, APF, 0.5% w/v fluoride, pH = 5.1; Colgate Oral Pharmaceuticals) and Prevident 5000 (1.1% sodium fluoride neutral agent, 0.5% w/v fluoride, pH = 7; Colgate Oral Pharmaceuticals). All the specimens were subjected to a three-point bending test on a universal testing machine. To observe the surface morphological changes, one wire from each group was randomly selected and observed under a SEM.

RESULTS:

It was observed that there was not much difference in the values of both modulus of elasticity and yield strength obtained after loading of stress on the wires in all the three experimental conditions. A significant difference in both modulus of elasticity and yield strength was observed during unloading of stress. Further, when the surface characteristics were observed for all the specimens using SEM images, it was observed that NiTi wires treated with Phos-Flur showed large surface defects which appeared as round, pitted areas depicting corrosion, numerous white inclusions, and overall damaged surface structure of the wire as compared with the control.

CONCLUSION:

Thus, fluoridated mouthwashes are essential to maintain good oral hygiene and decrease instance of caries in patients undergoing orthodontic treatment. The prophylactic usage of topical fluoride agents on NiTi wire seems to diminish the mechanical properties of the orthodontic wire that could significantly affect future treatment outcomes.

CLINICAL SIGNIFICANCE:

It has been proved that fluoride mouthwashes/gels do affect the structural surface qualities and strength of wires used during the orthodontic treatment irrespective of the composition of the wires. Therefore, it is the responsibility of the clinician to prescribe these prophylactic agents carefully while keeping in mind their pH so that the overall result of the treatment may not be hampered and delayed due to change in properties of the wires used.


 

sns Link parsing error
  • 페이스북으로 보내기
  • 트위터로 보내기
  • 구글플러스로 보내기
  • 블로그 보내기
  • 텔레그램 보내기

댓글목록

등록된 댓글이 없습니다.

이전글 다음글