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Featured researches published by Awj Vanpelt.


Caries Research | 1984

SURFACE FREE-ENERGY CHANGES OF HUMAN-ENAMEL DURING PELLICLE FORMATION - AN INVIVO STUDY

Hp Dejong; P Deboer; Hj Busscher; Awj Vanpelt; J Arends

The surface free energy and its polar- and dispersion components pertaining to pellicle-covered human enamel, sintered hydroxyapatite, Diacryl® and fluorethy-lenepropylene were determined from contact angle measurements. During the first 5 min of pellicle formation, the total surface free energy of human enamel increased from 84 to 110 erg·cm––2. After these first 5 min the surface free energy of pellicle covered solids remained constant for at least 2 h. Pellicle formation on apolar solids like fluorethylenepropylene increased the surface free energy only slightly.


Caries Research | 1982

SURFACE CHARACTERISTICS OF HYDROXYAPATITE AND ENAMEL AFTER ADSORPTION OF FLUORIDE-CONTAINING MACROMOLECULES

T Bartels; Awj Vanpelt; Hp Dejong; J Arends

In this study the adsorption of two fluoride-containing polyelectrolytes with different hydrophobic properties on hydroxyapatite is investigated. It was found that the adsorption of the macromolecule


Journal of Biomedical Materials Research | 1983

Dispersion and polar surface free energies of human enamel

Awj Vanpelt; Hp Dejong; Hj Busscher; J Arends


Polymer communications | 1985

SURFACE FREE-ENERGIES AND SURFACE COMPOSITIONS OF PVC/PMMA POLYMER BLENDS

Hj Busscher; W Hoogsteen; Ga Sawatsky; Awj Vanpelt; Hp Dejong; G. Challa; J Arends


Caries Research | 1984

EFFECT OF TOPICALLY APPLIED FLUORIDE SOLUTIONS ON THE SURFACE FREE-ENERGY OF PELLICLE-COVERED HUMAN-ENAMEL

Hp Dejong; P Deboer; Awj Vanpelt; Hj Busscher; J Arends


Journal of Dental Research | 1985

SURFACE FREE-ENERGIES OF HUMAN-DENTIN AND FIBROBLAST CELL SPREADING

Hp Dejong; P Deboer; Awj Vanpelt; Hj Busscher; J Arends


Surface and Interface Analysis | 1986

SURFACE FREE-ENERGIES AND SURFACE COMPOSITIONS OF PVC PMMA POLYMER BLENDS

Hj Busscher; W Hoogsteen; Ga Sawatsky; Awj Vanpelt; Hp Dejong; G. Challa; J Arends


Journal of Periodontal Research | 1984

THE EFFECT OF TOPICALLY APPLIED FLUORIDES ON THE SURFACE FREE-ENERGY OF HUMAN-DENTIN

Hp Dejong; P Deboer; Awj Vanpelt; Hj Busscher; J Arends


Journal of Dental Research | 1985

THE SURFACE FREE-ENERGY OF ORAL STREPTOCOCCI WITH AND WITHOUT SALIVA COATING

Hc Vandermei; Ah Weerkamp; Awj Vanpelt; Hj Busscher; J Arends


Caries Research | 1985

ROLE OF THE SURFACE-FREE ENERGY OF POLYMERS ON THE ADHESION OF S-SANGUIS CELLS

Awj Vanpelt; Hj Busscher; Mhwjc Uyen; Ah Weerkamp; Hp Dejong; J Arends

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J Arends

University of Groningen

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Hp Dejong

University of Groningen

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Hj Busscher

University of Groningen

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P Deboer

University of Groningen

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Ah Weerkamp

University of Groningen

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G. Challa

University of Groningen

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Hmwjc Uyen

University of Groningen

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T Bartels

University of Groningen

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