Measurement of intra-oral negative air pressure during dummy sucking in human newborn.
Non-nutritive sucking on a dummy was studied in 23 clinically normal full-term infants with a mean gestational age of 40 weeks (SD 1.5). The intra-oral negative air pressure was measured by a miniature air pressure transducer inside a commercial dummy. The sucking pattern in these infants was always composed of periodical changes between sucking burst and interburst periods with a mean rate of 5.3 (SD 1.6) bursts per minute. The mean rate of sucks within a sucking burst was 1.7 (SD 0.2) sucks/sec. The mean value of maximum intra-oral negative air pressure among newborn was 58 mbar (SD 14.6) during dummy sucking. During interburst periods the negative air pressure remained at a mean value of 8.4 mbar (SD 5.8).
Department of Orthodontics, Karolinska Institutet University Hospital of Huddinge, Sweden.
A
A
Lindner
D002675:Child, Preschool; D004867:Equipment Design; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007224:Infant Care; D007231:Infant, Newborn / Q000502:physiology*; D008297:Male; D009055:Mouth / Q000502:physiology*; D011312:Pressure; D013391:Sucking Behavior / Q000502:physiology*; D013997:Time Factors; D014160:Transducers, Pressure