Adsorption of peroxidase on titanium surfaces: A pilot study

Ahariz, Mohamed; Mouhyi, Jaafar; Louette, Pierre; Reck, Jack Walter Van; Malevez, Chantal; Courtois, Philippe

doi:10.1002/1097-4636(20001205)52:3<567::aid-jbm16>3.0.co;2-k

Cited by 10 publications

(3 citation statements)

References 12 publications

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“…H 2 O 2 is quickly adsorbed on a titanium implant surface. 67,68 The use of a powerful oxidizer such as H 2 O 2 and the laser-induced heat makes it possible to accelerate considerably the exchanges in titanium and oxygen atoms through the surface layer of titanium oxide. Hence, the titanium oxide layer thickens quickly, which enables it to become an osseointegratable surface upon ending the surgery.…”

Section: Vaporization Of Bacterial and Inflammatory Debrismentioning

confidence: 99%

The Peri‐Implantitis: Implant Surfaces, Microstructure, and Physicochemical Aspects

Mouhyi

Ehrenfest

Albrektsson

2012

Clin Implant Dent Rel Res

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191

183

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There are two ways of looking at secondary failures of osseointegration; one is to reflect on possible causes for the failure, the other focuses on the pathology per se. In the first case, background factors such as mechanical trauma (adverse loading) or inflammations/infections are being discussed as the cause of failure. Then peri-implantitis is a term reserved for implant disturbance due to inflammation/infections only. However, irrespective of the original reason for the failure being adverse loading or inflammation/infection, the end result with bone resorption and inflammation may be very similar. Hence, in the present article, an alternative outlook has been chosen. Trigerring factors for peri-implantitis are generally gathered under four categories: lesions of peri-implant attachment, presence of aggressive bacteria, excessive mechanical stress, and corrosion. If only one of these factors would start a chain reaction leading to lesions, then the other factors may combine to worsen the condition. With other words, peri-implantitis is a general term dependent on a synergy of several factors, irrespective of the precise reason for first triggering off symptoms.

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Section: Vaporization Of Bacterial and Inflammatory Debrismentioning

confidence: 99%

The Peri‐Implantitis: Implant Surfaces, Microstructure, and Physicochemical Aspects

Mouhyi

Ehrenfest

Albrektsson

2012

Clin Implant Dent Rel Res

Self Cite

191

183

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“…The lactoperoxidase-I − combination allows for the radioactive labelling of proteins. Lactoperoxidase has the property of adsorbing different surfaces, including that of biomaterials, such as titanium ( 33 ).…”

Section: Oral Peroxidases: Enzymes and Substratesmentioning

confidence: 99%

Oral peroxidases: From antimicrobial agents to ecological actors (Review)

Courtois

2021

Mol Med Rep

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Sialoperoxidase and myeloperoxidase are the two main peroxidase enzymes found in the oral cavity. Sialoperoxidase is present in salivary secretions and in the biofilms that line the oral surfaces, while myeloperoxidase is abundant in the dento-gingival sulcus area. In the presence of hydrogen peroxide (H 2 O 2 ), oral peroxidases catalyze the oxidation of the pseudohalide anion thiocyanate (SCN − ) to hypothiocyanite (OSCN − ), a strong oxidant that serves an antimicrobial role. Furthermore, oral peroxidases consume bacteria-produced H 2 O 2 and could help inactivate toxic carcinogenic and genotoxic substances. Numerous in vitro studies have reported the antibacterial, antimycotic and antiviral role of peroxidases, suggesting possible applications in oral therapy. However, the use of oral hygiene products incorporating peroxidase systems has not yet been shown to be beneficial for the treatment or prevention of oral infections. This paradox reflects our incomplete knowledge of the physiological role of peroxidases in a complex environment, such as the oral region. While hygiene is crucial for restoring oral microbiota to a symbiotic state, there are no data to suggest that the addition of a peroxidase per se can create a dysbiotic state. Recent investigations have associated the presence of peroxidase activity with gram-positive cocci microbial flora, and its insufficiency with dysbiosis has been linked to pathologies, such as caries, periodontitis or infections of the oral mucosa. Therefore, oxidants generated by oral peroxidases appear to be an essential ecological determinant for oral health through the selection of a symbiotic microbiota capable of resisting oxidative stress. The objective of the present review was to update the current knowledge of the physiological aspects and applications of oral peroxidases in clinical practice.

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“…Beyond the relevance of LPO as a convenient model enzyme in this specific connection, we like to point out that industrial and analytical applications of immobilised peroxidases are growing [7][8][9][10][11]. A few cases of LPO immobilisation are reported in literature [12][13][14], but not related to catalytic applications.…”

Section: Introductionmentioning

confidence: 99%