UNIVERSITAS AIRLANGGA



Detail Article

Dental Journal (Majalah Kedokteran Gigi)

ISSN 1978-3728

Vol. 39 / No. 3 / Published : 2006-07

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Original Article :

The effect of humidity on peak value of hema carbonyl absorbance band

Author :

  1. Adioro Soetojo*1
  1. Department of Conservative Dentistry, Faculty of Dentistry Airlangga University Surabaya – Indonesia

Abstract :

Bond strength between 2-Hydroxyethyl methacrylate HEMA-based dentin bonding agent and dentin collagen had proved by presence of the chemical interaction. This union involved the carbonyl group on HEMA resin with amino group on dentin collagen following produce an amide chain. However, this bond strength influence by humidity condition of dentin collagen and HEMA resin. The aim of this study is to measure the effect of humidity on peak value of the HEMA carbonyl absorbance band. The bond strength between by HEMA bonding agent and dentine collagen was analyzed in different humidity, e.g. in 60%, 70%, 80%, and 90% humidity. Control experiment was done in ambient room humidity that is 65%. Chemical bond that formed between HEMA and dentine collagen was carried out by mixing pure HEMA with bovine type-I collagen which had been stored in different humidity. The esther carbonyl group of HEMA will react with the amino group of collagen, produced an amide bonding, which is observed by measuring the IR spectrum absorbance of the esther carbonyl group of HEMA in KBr method. The decrease of the carbonyl group absorbance indicates the more chemical bonds formed. By measuring the absorbance of C=O esther in different humidity, it showed that the greatest number of chemical bonds resulted when the experiment was done in 70% humidity condition.

Keyword :

humidity, FTIR, HEMA, carbonyl group, type-I dentine collagen ,


References :

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Archive Article

Cover Media Content

Volume : 39 / No. : 3 / Pub. : 2006-09
  1. Periodontal Tissue Damage In Smokers
  2. Management Of Oral Focal Infection In Patients With Asthmatic Symptoms
  3. The Copper Concentration Variation To Physical Properties Of High Copper Amalgam Alloy
  4. Is It Possible To Distinguish The Understanding Of Denture Adhesive Between Japanese Dental Students And Indonesian Peers By A Questionnaire?
  5. Mandible Vertical Height Correction Using Lingual Bone-split Pedicle Onlay Graft Technique
  6. Facial, Upper Facial, And Orbital Index In Batak, Klaten, And Flores Students Of Jember University
  7. Effects Of Orthodontic Forces On Pulp Tissue
  8. The Effect Of Humidity On Peak Value Of Hema Carbonyl Absorbance Band
  9. Anticarcinogenesis Effect Of Gynura Procumbens (lour) Merr On Tongue Carcinogenesis In 4nqo-induced Rat
  10. Clinical Evaluation In Periodontitis Patient After Curettage

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