position and action of the tongue during · pdf fileposition and action of the tongue during...
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![Page 1: Position and action of the tongue during · PDF filePosition and action of the tongue during breastfeeding. C1 Warning - 1. ... the soft palate, drive the tongue back and alter the](https://reader031.vdocument.in/reader031/viewer/2022022420/5a7eabba7f8b9a2e358e84e3/html5/thumbnails/1.jpg)
Position and action of the tongue during breastfeeding.
C1Warning - 1
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Cadaver dissection demonstrating the natural anterior resting position of the tongue of a newborn.
Tooth bud in mandible
Tip of tongue
Eustachian tube
Soft palate
Epiglottis
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Illustration from Ros Escott article, Positioning, Attachment and Milk Transfer, Breastfeeding Review, 1989, p.35.C3
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Demonstrates position and action of tongue during breastfeeding (Woolridge)C4
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Tongue / teeth / cheeks are at rest in a “neutral” position. There are no abnormal forces within the mouth. This allows for the proper alignment of the teeth and dental arches.
This also allows for normal face development.
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While at rest, the tongue does not exert abnormal forces on any of the structures within the oral cavity. The teeth remain in astable position because they are in a “neutral zone” between the tongue and cheeks.
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During breastfeeding, the breast (breast/nipple) adapts to the shape of the mouth. The peristaltic motion of the tongue during
breastfeeding, presses the breast up against the palate.C8
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Forces generated during:
• Bottle feeding• Pacifier use• Infant habits
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Bottle feeding can separate the epiglottis/soft palate connection, elevate the soft palate, drive the tongue back and alter the action of tongue.
ET
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A vacuum can create an inward collapse of the oral cavity, throat and airway.
Vacuum
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The mouth has to adjust to any object in the mouth other than the breast. The unnatural forces that can develop can impact the position of the teeth and shape of the palate. Muscle forces always win out over bone. - e.g.- teeth will be moved.
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Upward forces on palate and vacuum can alter oral development.C13
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High palate / narrow arch
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Previous models placed together. The result is a cross-bite malocclusion.C15
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Severe malocclusion - severe OSASC16
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Factor in OSA - Macroglossia or large tongueC17
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Her original home made appliance.C18
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Front side of home made appliance.C19
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History of Infant Feeding
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Infant nursing on a goat.
Breasts Bottles & Babies - a history of infant feeding. Valerie Fildes
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Infants being suckled by asses kept at the Hospital for Sick Infants in Paris - until early 20th Century.
Breasts Bottles & Babies - a history of infant feeding. Valerie Fildes
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“How to use the newly invented feeding bottle of F. Baldini”, 1784.
1770-1800 AD -Newly invented
glass feeding bottle…screw top with sponge for
sucking.
(Precursor to “modern” bottles)
Breasts Bottles & Babies - a history of infant feeding. Valerie Fildes
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Glass nursing bottle with pewter nipple - hand painted - 1770sC24
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Glass nursing bottle with pewter nipple - mid 19th CenturyC25
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“Bubby pot” - 18th Century- Like a straw - hole opens into bottom of potC26
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Cup feeder - Early 20th Century.C27
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Early feeding vessel for infants.C28
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Habits and malocclusion• Thumb sucking• Finger sucking• Lip sucking• Arm sucking• Pacifiers
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Thumb sucking
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Thumb sucking fetus - learns how to suck / pacify.C31
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EXCESSIVE digit sucking can set up abnormal forces on the oral cavity and surrounding structures.C32
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Intense thumb sucker.C33
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Retruded chin and elevated upper lip is a result of his lip sucking.C34
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Thumb sucking created this open bite.C35
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Thumb sucking created this tongue thrust..C36
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Finger sucking
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2-digit-sucker and hair twister.
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Position of fingers while she sucked.C39
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Finger sucking created this tongue thrust.C40
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Finger sucking caused this open bite.C41
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Lip sucking
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Facial view of this lip sucker.
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Close up of child sucking on his lower lip.C44
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Lip sucking caused this open bite.C45
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Lip sucking caused this tongue thrust.C46
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Arm sucking
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Patient who was an arm sucker.C48
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Scar on arm due to arm sucking long after habit stoppedC49
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Malocclusion that resulted from arm suckingC50
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She had to wear this palate expander to correct her malocclusionC51
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She needed orthodontics to correct her malocclusion.C52
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Best part of treatment - Kansas University JayHawk retainer.C53
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Excessive sucking is what causes the damage.
Excessiveness =
Intensity + Frequency + Duration
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Labbok / Hendershot article:• Principle finding - the longer the duration of
breastfeeding, the lower the incidence of malocclusion.
• Bottle feeding leads to a habit of forward tongue thrusting and a weakened development of the orbicularis muscles.
• There is a significant decrease in tongue thrusting with an increased duration of breastfeeding .
Labbok M et al. Does breast-feeding protect against malocclusion? Am J Prev Med, 1987;3(4):227-32
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Pacifiers• Positive association between pacifiers use
and posterior cross bite and reduced upper arch width.
• Probable mechanism– Sucking activity in the cheeks– Reduced palatal support as the tongue takes a
lower position
Ogaard B, Larsson E, Lindsten R. The effect of sucking habits, cohort, sex, intercanine arch widths, and breast or bottle feeding on posterior cross bite in Norwegian and Swedish 3-year-old children Am J Orthod Dentofac Orthop 1994;106:161-6..
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Habits and malocclusion
• Dummy and digit sucking strongly associated with malocclusion.
• Malocclusions found in 35% of 3-year-olds– Anterior open bites in 27%– Unilateral cross bites in 8%
Paunio P, Rautava P, Sillanpaa M, The Finnish family competence study: The effects of living conditions on sucking habits in 3-year-
old Finnish children and association between these habits and dental occlusion. Acta Odontol Scand 1991;51:23-29
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Habits and malocclusion• Digit and dummy sucking resulted in
increased tendency to tongue thrust.• Tongue thrust related to: open bite, cross
bite, overjet, Class II malocclusion.• Sucking habits influence etiology of
malocclusion.
Melsen, B, Stensgaard K, Pedersen J. Sucking habits and their influence on swallowing pattern and prevalence of malocclusion. Euro J Othodont 1979;1(4):271-280.
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Sucking habits and malocclusion• Digit and dummy-sucking was the lowest
among children who had good opportunity for breastfeeding.
• Significant relationship was found between sucking habits and malocclusion such as: Class II malocclusion, increased overjet, anterior open bite.
Farsi N, Salama F, Pedro C. Sucking habits in Saudi children: prevalence, contributing factors and effects on the primary
dentition. Pediatr Dent 1997;19(1):28-33C59
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Bottle feeding and malocclusion
• There is a strong association (p=0.0006) between exclusive bottle-feeding and malocclusion.
• This mal-relationship does not diminish as the child grows from the primary to permanent dentition.
Davis D, Bell P. Infant feeding practices and occlusal outcomes:A longitudinal study. J Can Dent Assoc 1991;57(7):593-94
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Swallow___________
Thrust___________Facial form
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Test yourself!
The Basics of Swallowing
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Tip of tongue positioned behind upper front teeth during “N” sound.C63
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Peristaltic motion of tongue across roof of mouth during swallowC64
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Consequences of not having a correct swallowing pattern.
Abnormal swallowing pattern.
Tongue thrusting.
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Infant tongue thrust and resultant anterior open bite. In this case the tongue thrust was due to a tight frenum.
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Tongue thrust with resultant anterior open bite malocclusion.
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Adult tongue thrust created anterior open bite.
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Adult tongue thrust created anterior open bite and caused gingival recession.
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Tongue thrust caused open bite malocclusion.
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Adult tongue thrust created spaces and significant malocclusion.
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Post ortho open bite - 2 bicuspids removed.C72
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Actual tongue thrust and open bite of study model case. An orthodontic failure because the tongue thrust was not addressed.
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The case that started my research about 30 years ago. She is still a patient in my practice. Patient has a posterior bilateral tongue thrust. C74
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Posterior open bite on right side due to a posterior tongue thrust.C75
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Posterior open bite on left side due to a posterior tongue thrust.
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Swallowing dysfunction was more than seven timesas frequent among patients with snoring and sleep
apnea as it was among controls.
Jaghagen EL, Snoring, sleep apnoea and swallowing dysfunction: a videoradiographic study. Dentomaxillofacial Radiology, 2003
Sept;32(5):311-16.
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Facial Form
Breastfed baby
vs.
Bottle-fed / thumb sucking baby
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Divine Proportion of the face
Yosh Jefferson. Skeletal Types: Key to unraveling the mystery of facial beauty and its biologic significance. JGO 1996;7(2):7-25.
Natural beauty has a Divine / Golden proportion ratio of 1.618 / 1.0
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Two-year -old breastfed infant with divine proportion of the face.
Same breastfed infant at age 3 years-4 months. Note nice facial form and lip contour / shape.
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Adult who was breastfed as a child. She would not touch a bottle or pacifier. A pretty proportional face.
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Same adult with beautiful smile and teeth. Never had orthodontics (braces).
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Lip contour of 4 month old breastfed infant
Same infant at 4 1/2 years. Note natural lip line
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Note collapse of cheeks and bottle due to vacuum created during excessive sucking.C84
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Aggressive thumb sucker at 4 months.
Lip contour and tongue position of same aggressive thumb sucker when thumb removed. ( 4 months)
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Same patients at 4 1/2 years of age. Note lip contour and forward position of tongue at rest.C86
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Same patient at age 7 years Note long face and open mouth.
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Open bite on same 7 year old. Note forward position of tongue.
Compromised oropharynx (throat) of same 7 year old.
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Lip and Facial Contours
Infant exclusively breastfed
Infant who has sucked on a foreign object excessivelyC89