|Baltic Dental and Maxillofacial Journal|
June, 2011, Vol. 13, No. 2
Relationship between radiographic changes in the temporomandibular joint and bone mineral density: A population based study
© 2011 Stomatologija
Stomatologija 2011; 13 (2): 55-61 228 KB
Comparative analysis of CRT Buffer, GC Saliva Check Buffer tests and laboratory titration to evaluate saliva buffering capacity
Ilze Maldupa, Anda Brinkmane, Anna Mihailova
Objective. The purpose of this study is to evaluate the ability of two commercial strip tests and laboratory titration to detect saliva buffer capacity.
Materials and methods. Sixty-four patients were examined. Stimulated saliva was collected and buffer capacity was determined with two different chair-side strip tests in addition to immediate transportation to the laboratory to check the buffering ability by titrating with 0.005 M HCl and measuring pH by digital pH/Ion meter, used as a gold standart. The correlation were analyzed using the Spearman Rank Correlation Test, Cohen’s Kappa coefficient and Pearson’s Correlation test, p < 0.01. Sensitivity and specificity were used to measure precision of these tests.
Results. The response rate was 80%. High buffer capacity was found in 23.4% of cases, medium in 62.5%, and low in 14.1%. The Spearman Rank Correlation coefficient between the titration method and CRT Buffer test was 0.685 and the GC Saliva Check Buffer was 0.837. The Kappa coefficient for the CRT Buffer test was 0.508, while the coefficient for the GC Saliva Check Buffer was 0.752. The Pearson Correlation for the GC Saliva Check was 0.675. The difference is found in the buffer capacity at initial pH and at pH value 3.
Key words: saliva, caries risk, buffer capacity.
Received: 30 10 2010
Accepted for publishing: 24 06 2011
*Department of Therapeutic Dentistry, Institute of Stomatology, Riga Stradins University, Latvia
Ilze Maldupa* PhD student
Anda Brinkmane* D.D.S., PhD., assoc. prof.
Anna Mihailova* postgraduate student
Address correspondence to Dr. Ilze Maldupa, T. Grothusa str. 2, Jelgava, LV- 3002.