Background: Contact dermatitis and also allergic skin diseases are increasing and is becoming problem among Mongolian dental technicians. Serum total IgE and patch testing for contact allergy are needed to confirm the diagnosis. Methods: The aim of this study was to determine and discuss the results of patch tests (potassium dichromate, cobalt chloride hexahydrate and nickel sulfate) and allergic reaction (serum total IgE titer) in dental technicians. Results: In this cross-sectional study, fifty dental technicians were enrolled, aged between 25-52 years and fifty healthy students of dentistry school participated, who were aged 18-32 years. The mean average age of dental technicians was 34.4±0.91. Serum total IgE levels in dental technicians were significantly higher (p=0.03) than dental students group. Serum total IgE have direct, strong correlation with patch testing results (r=-0.759, p>0.001) in group of dental technicians. The most prevalent positive reaction was to nickel sulfate (7; 43.75%). Conclusion Due to the complex etiology of skin allergic diseases in dental technicians with suspected allergy, detailed diagnostics should be carried out in order to enable identification of allergenic substances and their elimination from the dental technician’s occupational condition.

The main goal of this study is to examine the development of auditory perception performances of a cochlear implanted child who receive auditory verbal therapy. Present study included a child with prelinguistic hearing loss who received cochlear implant at the Department of ENT, 1st State Central Hospital and enrolled in Auditory Verbal Therapy (AVT) in the Speech Therapy Unit of “ Aid” Clinic. This hearing impaired child participated in auditory verbal therapy with their mother and/or father for 5 months, and the family was given training programs to apply at home after each therapy session. The auditory perception performances of a child were evaluated before implantation and after: twice every week in total 32 Audio-Verval Therapy sessions were performed with the help of Medel LittlEars Auditory Questionnaire, LIP (Listening Process Profile), Ling’s Five Sound Test, the Multiple Frequency Animal Sound Test (mFAST) and MTP (Monosyllable and Polysyllable Test). The auditory perception performances of a child joining auditory verbal therapy programs increased after 5 months of implantation. According to the Ling’s test all 5 sounds are determined (20-60dB) in 1m distance, but discrimination is observed in frequency range between 40-60 dB for sounds “A”, “U” and “M”. Parents active participation as well as full attendance in the AVT treatment shows progress in auditory development of a child. Furthermore evaluation and data analysis is needed.