잘 모르는 치아상식 : 불소와 미백제가 임플란트에 미치는 영향

충치를 예방한다는 불소, 치아를 하얗게 한다는 미백제

여기에 우리가 모르는 사실이 하나 있습니다.

지금 이 글을 읽는 분의 입 속에 임플란트가 있다면 어떻게 될까요?

최근의 연구 논문들은 이렇게 말하고 있습니다.

불소와 미백제는 티타늄임플란트를 부식(corrosion)시킨다.

따라서 구강내에 보철물이나 임플란트를 가지고 있는 분들은 구강관리에 특별히 신경을 써야 하겠습니다.

Biomaterials. 1998 Jan-Feb;19(1-3):85-92.

Effects of fluorides on titanium and other dental alloys in dentistry.

Reclaru L¹, Meyer JM.

Author information

1

P.X. Holding, La Chaux-de-Fonds, Switzerland. pxholding@access.ch

Abstract

Fluoride ions are the only aggressive ions for the protective oxide layer of titanium and titanium alloys. Thus their presence may possibly start a localized corrosive degradation by pitting and crevice corrosion processes. Since hygiene products like toothpastes and prophylactic gels contain fluoride ions, the present study has been completed to evaluate the effect of fluoride ions on titanium and dental alloys used, for example, as dental implants and superstructures. Two different milieu based on the Fusayama artificial saliva and an electrolyte solution containing NaCl, with and without fluoride ions, have been used for the electrochemical tests, in a pH range of 6.15 to 3.0. Open circuit potentials, potentiodynamic curves, Tafel slopes, galvanic couplings and crevice potentials are the electrochemical procedures selected for this work. Based on the experimental results obtained with these procedures, the mixed potential theory was applied to predict couple potentials and couple currents. It has thus been shown that: (a) with and without fluoride ions, galvanic currents are weak (10E - 7 to 10E - 8 A cm(-2)) within a pH range of 6.15 to 3.5; (b) titanium submitted to anodic polarization in an electrolyte, even one containing fluoride, merely develops an oxide layer and does not corrode within that same pH range of 6.15 to 3.5; (c) in confined areas where fluoride ions are present, titanium and the dental alloys tested undergo as corrosive process, in the form of crevice and pitting, as soon as the pH drops below 3.5.

Fogorv Sz. 2006 Apr;99(2):53-9.

[The effect of fluorides on the surface structure of titanium implants].

[Article in Hungarian]

Stájer A¹, Radnai M, Pelsoczi KI, Turzó K, Oszkó A, Fazekas A.

Author information

1

Szegedi Tudományegyetem Altalános Orvostudományi Kar Fogászati és Szájsebészeti Klinika.

Abstract

The high fluoride concentration and the acidic pH in tooth-paste used to prevent caries may modify the surface structure of implants made of titanium. Oxidative agents thicken and condense the titanium-dioxid layer on the surface of titanium and improve its stability against corrosion effects, while reductive agents like fluoride may have the opposite effect and attack this layer. The aim of the present work was to study the effects of fluoride containing toothpaste and gel on the titanium dioxid layer of titanium. The surfaces of the titanium (commercial pure grade I.) discs were treated with toothpaste and gel containing 0.125 % and 1.25 % fluoride, respectively. The changes in the surface structure were analyzed by atomic force microscope (AFM) and X-ray photoelectron spectroscopy (XPS). Our results demonstrated that fluoride strongly binds to the titanium surface and modifies its structure in case of fluoride containing gels.

Titanium surface topography after brushing with fluoride and fluoride-free toothpaste simulating 10 years of use

Author links open overlay panelLaiza M.G.Fais^aRomeu B.Fernandes-Filho^aMarcelo A.Pereira-da-Silva^bLuis G.Vaz^aGelson L.Adabo^a

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https://doi.org/10.1016/j.jdent.2012.01.001Get rights and content

Open Access funded by Brazilian Government

Under an Elsevier user license

open access

Abstract

Objectives

To conduct a controlled study contrasting titanium surface topography after procedures that simulated 10 years of brushing using toothpastes with or without fluoride.

Methods

Commercially pure titanium (cp Ti) and Ti–6Al–4V disks (6 mm Ø × 4 mm) were mirror-polished and treated according to 6 groups (n = 6) as a function of immersion (I) or brushing (B) using deionised water (W), fluoride-free toothpaste (T) and fluoride toothpaste (FT). Surface topography was evaluated at baseline (pretreatment) and post-treatment, using atomic force microscope in order to obtain three-dimensional images and mean roughness. Specimens submitted to immersion were submerged in the vehicles without brushing. For brushed specimens, procedures were conducted using a linear brushing machine with a soft-bristled toothbrush. Immersion and brushing were performed for 244 h. IFT and BFT samples were analysed under scanning electron microscope with Energy-Dispersive X-ray Spectroscopy (EDS). Pre and post-treatment values were compared using the paired Student T-test (α = .05). Intergroup comparisons were conducted using one-way ANOVA with Tukey post-test (α = .05).

Results

cp Ti mean roughness (in nanometers) comparing pre and post-treatment were: IW, 2.29 ± 0.55/2.33 ± 0.17; IT, 2.24 ± 0.46/2.02 ± 0.38; IFT, 2.22 ± 0.53/1.95 ± 0.36; BW, 2.22 ± 0.42/3.76 ± 0.45; BT, 2.27 ± 0.55/16.05 ± 3.25; BFT, 2.27 ± 0.51/22.39 ± 5.07. Mean roughness (in nanometers) measured in Ti–6Al–4V disks (pre/post-treatment) were: IW, 1.79 ± 0.25/2.01 ± 0.25; IT, 1.61 ± 0.13/1.74 ± 0.19; IFT, 1.92 ± 0.39/2.29 ± 0.51; BW, 2.00 ± 0.71/2.05 ± 0.43; BT, 2.37 ± 0.86/11.17 ± 2.29; BFT, 1.83 ± 0.50/15.73 ± 1.78. No significant differences were seen after immersions (p > .05). Brushing increased the roughness of cp Ti and of Ti–6Al–4V (p < .01); cp Ti had topographic changes after BW, BT and BFT treatments whilst Ti–6Al–4V was significantly different only after BT and BTF. EDS has not detected fluoride or sodium ions on metal surfaces.

Conclusions

Exposure to toothpastes (immersion) does not affect titanium per se; their use during brushing affects titanium topography and roughness. The associated effects of toothpaste abrasives and fluorides seem to increase roughness on titanium brushed surfaces.

아파프로 나노케어

무불소, 나노메디칼 하이드록시아파타이트 페이스트

충치예방효과, 에나멜(법랑질) 수복 효과, 시린이 완화효과

단 한 번의 치료로도 입안이 상쾌하며 치아가 매끄러워지고 광택 납니다!

어린이 부터 어른 까지 누구나 사용할 수 있는 충치예방 치료페이스트

나노 메디칼 하이드록시아파타이트는 치아와 동일한 성분으로 삼켜도 인체에 무해합니다.

거칠어진 치아, 변색 된 치아, 광택과 윤기가 없는 치아, 푸석거리는 치아, 시린치아