Document Detail

A study of the influence of mouth-breathing in some parameters of unstimulated and stimulated whole saliva of adolescents.
MedLine Citation:
PMID:  16242785     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: The aim of this study was to analyze some standard parameters of the unstimulated and stimulated whole saliva of mouth-breathers and a control group to determine if these variables present any difference in mouth-breathers compared to control group, since these parameters of saliva can influence the oral health. METHODS: Saliva samples were collected from 61 adolescents aged 10-19 years; 30 were mouth-breathers and 31 were nose-breathers. The unstimulated salivary specimen was collected, followed by collection of the stimulated saliva. Soon after collecting the salivary sample, the flow rate and buffering capacity were determined. The samples were then stored at -80 degrees C until analysis was performed. The analysis consisted of the determination of protein content and total, free and bound sialic acid levels. RESULTS: No statistically significant difference was observed in the flow rate, buffering capacity, protein content, total and bound sialic acid levels of unstimulated and stimulated saliva, nor in the free sialic acid of stimulated saliva. However, the levels of free sialic acid of the unstimulated saliva were significantly higher in the mouth-breather compared to the control group. CONCLUSIONS: Since a higher level of free sialic acid is indicative of an increase in the number of bacteria in saliva, our findings suggest that mouth-breathers retain more bacteria in oral tissues.
Rosa M E Weiler; Mauro Fisberg; Alcely S Barroso; Jose Nicolau; Roberta Simi; Walter L Siqueira
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Publication Detail:
Type:  Journal Article     Date:  2005-10-19
Journal Detail:
Title:  International journal of pediatric otorhinolaryngology     Volume:  70     ISSN:  0165-5876     ISO Abbreviation:  Int. J. Pediatr. Otorhinolaryngol.     Publication Date:  2006 May 
Date Detail:
Created Date:  2006-03-28     Completed Date:  2006-10-20     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8003603     Medline TA:  Int J Pediatr Otorhinolaryngol     Country:  Ireland    
Other Details:
Languages:  eng     Pagination:  799-805     Citation Subset:  IM    
Federal University, Adolescent Sector, Department of Pediatrics, School of Medicine, S. Paulo, SP 05412-003, Brazil.
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MeSH Terms
Case-Control Studies
Mouth Breathing / metabolism*
N-Acetylneuraminic Acid / analysis*
Saliva / chemistry*
Reg. No./Substance:
131-48-6/N-Acetylneuraminic Acid

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