December, 2009, Vol. 11, No. 4

CONTENTS

Effects of different repolishing techniques on colour change of provisional prosthetic materials
Vygandas Rutkunas, Vaidotas Sabaliauskas
105 -112

Early Morphofunctional Response of Contact Tissue after Intraosal Implantation in Rabbit Jaw of Pure Synthetic Hydroxyapatite (HAp) Bioceramic Materials and HAp Saturated with Lidocaine
Ilze Salma, Mara Pilmane, Andrejs Skagers, Janis Vetra, Girts Salms, Liga Berzina-Cimdina, Rita Serzane
113-118

Relationship between tooth size discrepancies and malocclusion
Kristina Lopatiene, Aiste Dumbravaite
119-124

Osteopontin and Osteocalcin in Maxilla Tissue of Skeletal Class III Patients
Iveta Jankovska, Mara Pilmane, Ilga Urtane
125-128

In vitro investigation of the integration depth of oral fluids and disinfectants into alginate impressions
Rimas Surna, Jonas Junevicius, Evaldas Rutkauskas
129-134

© 2009 Stomatologija

Stomatologija 2009; 11 (4): 129-134 261 KB

In vitro investigation of the integration depth of oral fluids and disinfectants into alginate impressions

Rimas Surna, Jonas Junevicius, Evaldas Rutkauskas

Summary

The objective. The objective of this work is to prove that oral cavity fluids diffuse into alginate mass of impressions. In addition, the information is presented on the subject that disinfectants used for alginate impressions disinfection not only diffuse into alginate mass but penetrate deeper than oral cavity fluids.

Materials and methods of the study. Three examination groups were formed for the research, the results of which evidenced how deeply oral cavity fluids and disinfectants ‘Alpha Guard GF’ and ‘Orbis’ could possibly diffuse into alginate impression material ‘Kromopan 100’. In the first examination group ten impressions from the upper jaw dental arch and mucosa were taken, firstly colouring oral cavity fluids with a special colouring tablet MIRA-2-TON (Hager Werken). Cuts were randomly selected from impressions and scanned aiming to establish the depth of the coloured oral cavity fluid penetration. In the second and the third examination groups taken alginate impressions were accordingly soaked in ‘Alpha Guard GF’ and ‘Orbis’ with pigment and later randomly selected cuts were scanned in the same manner as in the first research group.

Results. The research results establish that coloured dental cavity fluids maximum diffuse into alginate impression is up to 540 µm with the presence of 95% of discolouring while disinfectants

‘Alpha Guard GF’ and ‘Orbis’ accordingly diffuse into alginate mass up to 710 µm and 870 µm with the presence of 95% of discolouring.

Conclusions. The results obtained show that disinfectants using them according to the recommendations of a manufacturer, diffuse into alginate mass deeper than oral cavity fluids at the time of impressions taking.

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¹Faculty of Electrical Engineering and Control Systems, Kaunas University of Technology, Kaunas, Lithuania

²Clinic of Dental and Maxillar Orthopedics, Kaunas University of Medicine, Kaunas, Lithuania

Rimas Surna¹ – Senior lecturer

Jonas Junevicius² – D.D.S.

Evaldas Rutkauskas² – D.D.S.

Address correspondence to: Dr. Jonas Junevicius, Clinic of Dental and Maxillar Orthopedics, Kaunas University of Medicine, 51 Sukileliu Street, Kaunas, LT-50106, Lithuania.

E-mail address: jjonis@dent.kmu.lt