교정치로와 임프란트 치료시 치아미백제, 미백치약, 불소,불소치약,불소함유 구강청결제는 좋지 않습니다.

교정치료, 임플란트, 치아미백치료시 미백제(미백치약)와 고농도 불소(불소치약)는 는 사용하지 않는 것이 좋습니다.

불소와 미백제가 임플란트, 어버트먼트, 교정용 와이어에 손상을 줄 수 있기 때문입니다. 또한 치면 연마력이 강한 치약도 피하는 것이 좋습니다.

티타늄이나 금속의 표면에 손상을 준다는 뜻은 거칠어진다는 의미입니다. 거칠어진 표면은 세균이 잘 달라 붙고 제거하기도 어렵게 된다는 뜻입니다. 즉 거칠어진 표면은 충치나 치주염의 위험이 높아지게 됩니다.

고농도 불소와 미백제가 교정용 와이어와 브라켓 본딩력에 손상을 준다는 논문

J Orthod Sci. 2016 Oct-Dec; 5(4): 121–126.

doi: 10.4103/2278-0203.192114

PMCID: PMC5084473

PMID: 27843886

Fluoride influences nickel-titanium orthodontic wires' surface texture and friction resistance

Abstract

Objectives:

The aim of this study was to investigate the effects exerted by the acidulated fluoride gel on stainless steel and nickel-titanium (Ni-Ti) orthodontic wires.

Materials and Methods:

Sixty stainless steel and Ni-Ti orthodontic archwires were distributed into forty archwires used for in vitro study and twenty for in situ study. Fluoride was applied for 1 h in the in vitro experiment while it was applied for 5 min in the in situ experiment. The friction resistance of all wires with ceramic brackets before/after topical fluoride application was measured using a universal testing machine at 1 min intervals of moving wire. Moreover, surface properties of the tested wires before/after fluoride application and before/after friction test were examined by a scanning electron microscope (SEM). Dunnett's t-test was used to compare frictional resistance of as-received stainless steel wires and Ni-Ti wires to the wires treated by fluoride in vitro and in situ (P < 0.05). Two-way ANOVA was used to compare the effect of fluoride application and type of wire on friction resistance in vitro and in situ (P < 0.05).

Results:

Ni-Ti wires recorded significantly high friction resistance after fluoride application when compared to stainless steel wires in vitro, P < 0.05. Fluoride application did not significantly affect the friction resistance of the tested wires in situ, P < 0.05. SEM observation revealed deterioration of the surface texture of the Ni-Ti wires after fluoride application in vitro and in situ.

Conclusions:

The in vitro fluoride application caused an increase in friction resistance of Ni-Ti wires when compared to stainless steel wires. In vitro and in situ fluoride application caused deterioration in surface properties of Ni-Ti wires.

Key words: Fluoride, friction resistance, orthodontics, prophylaxis, surfaces

 

The effect of carbamide peroxide bleach on the tensile bond strength of ceramic brackets: An in vitro study

Abstract

Recent advances in cosmetic dentistry have led to the development of a variety of new products and techniques including vital bleaching and ceramic brackets. Therefore this study was conducted to see whether the use of an at-home carbamide peroxide bleaching agent before bonding affected the tensile bond strength of a precoated ceramic orthodontic bracket. Sixty extracted human premolar teeth were randomly separated into three groups of 20. Group 1 was a control group that was etched and bonded in the usual manner. Group 2 was immersed in a carbamide peroxide home bleaching agent for 72 hours before pumicing and bonding. Group 3 was also bleached for 72 hours but was immersed in distilled water for 1 week before bonding. The results indicated that recently bleached teeth have significantly reduced bond strength values when compared with both groups 1 and 3. We suggest that if a patient is using a tooth whitening product, that they discontinue its use at least 1 week before the bonding of orthodontic attachments. (AM J ORTHOD DENTOFAC ORTHOP 1994;106:371-5.)

고농도 불소와 미백제가 임플란트와 어버트먼트에 손상을 준다는 논문

J Periodontal Res. 2019 Feb;54(1):46-52. doi: 10.1111/jre.12603. Epub 2018 Oct 22.

Surface damage of dental implant systems and ions release after exposure to fluoride and hydrogen peroxide.

Abstract

OBJECTIVE:

The aim of this study was to evaluate surface changes on dental implant systems and ions release after immersion in fluoride and hydrogen peroxide.

METHODS:

Ten implant-abutment assemblies were embedded in acrylic resin and cross-sectioned along the implant vertical axis. Samples were wet ground and polished. Delimited areas of groups of samples were immersed in 1.23% sodium fluoride gel (F) or in 35% hydrogen peroxide (HP) for 16 min. Gels (n = 3) were collected from the implant surfaces and analyzed by inductively coupled plasma mass spectrometry (ICP-MS), to detect the concentration of metallic ions released from the implant systems. Selected areas of the abutment and implant (n = 15) were analyzed by atomic force microscopy (AFM) and scanning electron microscopy (SEM).

RESULTS:

SEM images revealed surface topographic changes on implant-abutment joints after immersion in fluoride. Implants showed excessive oxidation within loss of material, while abutment surfaces revealed intergranular corrosion after immersion in fluoride. ICP-MS results revealed a high concentration of Ti, Al, V ions in fluoride after contact with the implant systems. Localized corrosion of implant systems could not be detected by SEM after immersion in hydrogen peroxide although the profilometry showed increase in roughness. ICP-MS showed the release of metallic ions in hydrogen peroxide medium after contact with dental implants.

CONCLUSION:

Therapeutical substances such as fluorides and hydrogen peroxide can promote the degradation of titanium-based dental implant and abutments leading to the release of toxic ions.

 

Effect of Fluoride and Bleaching Agents on the Degradation of Titanium: Literature Review

Gabriella MP Juanito¹, Carolina S Morsch¹, César A Benfatti¹, Márcio C Fredel², Ricardo S Magini^1* and Júlio CM Souza¹

¹Center for Research on Dental Implants (CEPID), School of Dentistry (ODT), Federal University of Santa Catarina (UFSC), Florianópolis/SC, 88040-900, Brazil

²Department of Mechanical Engineering (EMC), Federal University of Santa Catarina (UFSC), Florianópolis/SC, 88040-900, Brazil

 

The use of mouthwashes and dental gels containing fluorides has increased in recent years as well as the dental bleaching agents. However, such agents can be in contact with surfaces of dental restorative, prosthetic and implant systems at high concentration in the oral cavity. That can adversely affect the corrosion resistance of titanium and its alloys. The purpose of this review was to summarize the current data regarding the influence of fluoride and bleaching agents on the degradation of titanium and Ti6Al4V alloy surfaces. Books, chapters and full-text articles were identified on Medline and hand searches applying the following search items: ?titanium and fluorides?; ?titanium and hydrogen peroxide?; ?titanium and ion release?; and ?titanium and degradation?. Thirty eight studies from an initial yield of 180 studies were selected. Results indicated that therapeutic substances used in dental practice such as fluoride, hydrogen and carbamide peroxides are related to corrosion and wear processes of titanium-based structures.Consequently, corrosive processes occurring on titanium lead to the release of ions and wear particles to surrounding peri-implant tissues and organs. However, the relation between ion release and inflammatory reactions into human tissues is not clear yet.

www.apadent.kr

치아미백제, 미벡치약등은 자연치아에도 좋지 않습니다.

치아미백이 치면을 거칠게 해 바이오필름(치면세균막)생성에 유리한 환경을 만든다는 논문

J Dent. 2014 Nov;42(11):1480-6. doi: 10.1016/j.jdent.2014.08.003. Epub 2014 Aug 15.

In-office bleaching gel with 35% hydrogen peroxide enhanced biofilm formation of early colonizing streptococci on human enamel.

Ittatirut S¹, Matangkasombut O², Thanyasrisung P³.

Author information

1

Esthetic Restorative and Implant Dentistry Program, Chulalongkorn University, Henri-Dunant Road, Bangkok 10330, Thailand.

2

Department of Microbiology and DRU on Oral Microbiology, Faculty of Dentistry, Chulalongkorn University, Henri-Dunant Road, Bangkok 10330, Thailand. Electronic address: oranart@gmail.com.

3

Department of Microbiology and DRU on Oral Microbiology, Faculty of Dentistry, Chulalongkorn University, Henri-Dunant Road, Bangkok 10330, Thailand. Electronic address: tpanida@gmail.com.

Abstract

OBJECTIVES:

To compare the effects of 25% and 35% hydrogen peroxide in-office bleaching systems on surface roughness and streptococcal biofilm formation on human enamel.

METHODS:

Enamel specimens (3mm×3mm×2mm, n=162) from human permanent teeth were randomly divided into 3 treatment groups (n=54 each): (1) control, (2) bleached with 25% hydrogen peroxide (Zoom2™), and (3) bleached with 35% hydrogen peroxide (Beyond™). The enamel surface roughness was measured by a profilometer before and after treatments. Subsequently, the treated enamel specimens were randomly placed into 3 subgroups (n=18 each) and incubated with: (1) trypticase soy broth control, (2) Streptococcus mutans culture and (3) Streptococcus sanguinis culture for 24h. Biofilm formation was quantified by crystal violet staining. The biofilm structure on three specimens from each group was visualized by scanning electron microscopy. Data were analyzed by Kruskal-Wallis and Mann-Whitney U tests with Bonferroni corrections. Significance level was set at p<0.05.

RESULTS:

Both bleaching systems significantly reduced enamel surface roughness comparing to the control group (p<0.001), but there was no difference between the two treatment groups. Remarkably, S. sanguinis biofilm formation was significantly higher on enamel specimens bleached with 35% hydrogen peroxide than other treatments (p<0.001), but was lower on those bleached with 25% hydrogen peroxide (p<0.001). In contrast, no difference in S. mutans biofilm formation was observed among the three treatment groups.

CONCLUSION:

Both 25% and 35% hydrogen peroxide caused similar degrees of reduction in enamel surface roughness. Nevertheless, bleaching with 35% hydrogen peroxide appeared to markedly promote S. sanguinis biofilm formation.

CLINICAL SIGNIFICANCE:

The increase of early colonizer biofilm raised concerns over adverse effects of in-office bleaching on plaque formation. This should be further investigated in vivo and efficient plaque control should be emphasized after bleaching with high concentrations of hydrogen peroxide.

Copyright © 2014 Elsevier Ltd. All rights reserved.

KEYWORDS:

Biofilm formation; Enamel; Hydrogen peroxide; In-office bleaching; Streptococcus mutans; Streptococcus sanguinis