NEET MDS Lessons
Pedodontics
1. Behavior Modification: Aversive Conditioning (HOME)
- Definition: Aversive conditioning is a behavior modification technique used to manage undesirable behaviors in children, particularly in a dental setting.
- Method: Known as the Hand-Over-Mouth Exercise
(HOME), this technique was introduced by Evangeline Jordan in 1920.
- Procedure: The dentist gently places their hand over the child’s mouth to prevent them from speaking or crying, allowing for a calm environment to perform dental procedures. This method is intended to help the child understand that certain behaviors (e.g., crying or moving excessively) are not conducive to receiving care.
2. Dental Materials: Crowns
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Cheng Crowns:
- Composition: These crowns feature a pure resin facing, which makes them stain-resistant.
- Design: Pre-crimped for ease of placement and adaptation to the tooth structure.
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Pedo Pearls:
- Description: Aluminum crown forms coated with tooth-colored epoxy paint.
- Durability: Relatively soft, which may affect their long-term durability compared to other crown materials.
3. Oral Hygiene for Infants
- Gum Pad Cleaning:
- Timing: Cleaning of gum pads can begin as early as the first week after birth.
- Parental Responsibility: Parents should brush or clean their baby’s gums and emerging teeth daily until the child is old enough to manage oral hygiene independently.
4. Indicators of Trauma and Abuse in Children
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Frenum Conditions:
- Maxillary Labial Frenum: A torn frenum in a young child may indicate trauma from a slap, fist blow, or forced feeding.
- Lingual Frenum: A torn lingual frenum could suggest sexual abuse or forced feeding.
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Signs of Abuse:
- Bruising or Petechiae: Presence of bruising or petechiae on the soft and hard palate may indicate sexual abuse, particularly in cases of oral penetration.
- Infection or Ulceration: If any signs of infection or ulceration are noted, specimens should be cultured for sexually transmitted diseases (STDs) such as gonorrhea, syphilis, or venereal warts.
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Neglect Indicators:
- A child presenting with extensive untreated dental issues, untreated infections, or dental pain may be considered a victim of physical neglect, indicating that parents are not attending to the child’s basic medical needs.
5. Classical Conditioning
- Pavlov’s Contribution: Ivan Petrovich Pavlov was the
first to study classical conditioning, a learning process that occurs
through associations between an environmental stimulus and a naturally
occurring stimulus.
- Relevance in Dentistry: Understanding classical conditioning can help dental professionals develop strategies to create positive associations with dental visits, thereby reducing anxiety and fear in children.
Moro Reflex and Startle Reflex
Moro Reflex
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The Moro reflex, also known as the startle reflex, is an involuntary response observed in infants, typically elicited by sudden movements or changes in position of the head and neck.
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Elicitation:
- A common method to elicit the Moro reflex is to pull the baby halfway to a sitting position from a supine position and then suddenly let the head fall back a short distance.
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Response:
- The reflex consists of a rapid abduction and extension of the arms, accompanied by the opening of the hands.
- Following this initial response, the arms then come together as if in an embrace.
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Clinical Importance:
- The Moro reflex provides valuable information about the infant's muscle tone and neurological function.
- An asymmetrical response may indicate:
- Unequal muscle tone on either side.
- Weakness in one arm.
- Possible injury to the humerus or clavicle.
- The Moro reflex typically disappears by 2 to 3 months of age, which is a normal part of development.
Startle Reflex
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The startle reflex is similar to the Moro reflex but is specifically triggered by sudden noises or other unexpected stimuli.
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Response:
- In the startle reflex, the elbows are flexed, and the hands remain closed, showing less of an embracing motion compared to the Moro reflex.
- The movement of the arms may involve both outward and inward motions, but it is less pronounced than in the Moro reflex.
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Clinical Importance:
- The startle reflex is an important indicator of an infant's sensory processing and neurological integrity.
- It can also be used to assess the infant's response to environmental stimuli and overall alertness.