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Effect of probiotic bacteria on oral Candida in head- and neck-radiotherapy patients: A randomized clinical trial

1 Department of Oral Radiology, College of Dentistry, Aljouf University, Sakaka, Kingdom of Saudi Arabia
2 Department of Preventive Dentistry, College of Dentistry, Aljouf University, Sakaka, Kingdom of Saudi Arabia
3 Department of Oral Medicine and Radiology, Drs. S and NR Siddhartha Institute of Dental Sciences, Gannavaram, Andhra Pradesh, India

Correspondence Address:
Radhika Doppalapudi,
Department of Oral Radiology, College of Dentistry, Aljouf University, Sakaka
Kingdom of Saudi Arabia
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/jcrt.JCRT_334_18

Objective: The aim of the study is to assess the effect of probiotic bacteria on oral Candida counts in cancer patients who are undergoing head- and neck-radiotherapy in a tertiary care center. Study Design: The study was a randomized clinical trial including 90 patients who just completed head- and neck-radiotherapy. Materials and Methods: Participants were randomly allocated into three equal sized groups, i.e., probiotics group, candid group, and combination groups. Oral rinse samples of the patients were collected before and after the intervention for the identification of Candida. The samples were incubated on Sabouraud's Dextrose Agar with Chloramphenicol at 37°C for 48 h, to assess the counts of colony-forming units/milliliter (CFU/ml) of Candida in saliva, and further on chrome agar plates to identify the Candida spp. Data were analyzed using mixed ANOVA to compare mean CFU/ml of Candida among three groups before and after the intervention. Results: A total of 86 patients were included in the final analysis and there was a statistically significant reduction in mean Candida spp. Counts (CFU/ml) after intervention in all the three groups (P = 0.000) and significant reductions identified in both probiotic and combination therapy groups. Apart from reduction in Candida albicans, significant decrease in Candida glabrata and Candida tropicalis was observed after probiotics usage compared to other groups. Conclusions: The present study suggests that probiotic bacteria were effective in reducing oral Candida spp which can be recommended alone or in combination with traditional antifungal agents for effective reduction in oral Candida in head- and neck-radiotherapy patients.

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