NEET MDS Lessons
Pedodontics
Endodontic Filling Techniques
Endodontic filling techniques are essential for the successful treatment of root canal systems. Various methods have been developed to ensure that the canal is adequately filled with the appropriate material, providing a seal to prevent reinfection.
1. Endodontic Pressure Syringe
- Developed By: Greenberg; technique described by Speeding and Karakow in 1965.
- Features:
- Consists of a syringe barrel, threaded plunger, wrench, and threaded needle.
- The needle is placed 1 mm short of the apex.
- The technique involves a slow withdrawing motion, where the needle is withdrawn 3 mm with each quarter turn of the screw until the canal is visibly filled at the orifice.
2. Mechanical Syringe
- Proposed By: Greenberg in 1971.
- Features:
- Cement is loaded into the syringe using a 30-gauge needle, following the manufacturer's recommendations.
- The cement is expressed into the canal while applying continuous pressure and withdrawing the needle simultaneously.
3. Tuberculin Syringe
- Utilized By: Aylord and Johnson in 1987.
- Features:
- A standard 26-gauge, 3/8 inch needle is used for this technique.
- This method allows for precise delivery of filling material into the canal.
4. Jiffy Tubes
- Popularized By: Riffcin in 1980.
- Features:
- Material is expressed into the canal using slow finger pressure on the plunger until the canal is visibly filled at the orifice.
- This technique provides a simple and effective way to fill the canal.
5. Incremental Filling
- First Used By: Gould in 1972.
- Features:
- An endodontic plugger, corresponding to the size of the canal with a rubber stop, is used to place a thick mix of cement into the canal.
- The thick mix is prepared into a flame shape that corresponds to the size and shape of the canal and is gently tapped into the apical area with the plugger.
6. Lentulospiral Technique
- Advocated By: Kopel in 1970.
- Features:
- A lentulospiral is dipped into the filling material and introduced into the canal to its predetermined length.
- The lentulospiral is rotated within the canal, and additional paste is added until the canal is filled.
7. Other Techniques
- Amalgam Plugger:
- Introduced by Nosonwitz (1960) and King (1984) for filling canals.
- Paper Points:
- Utilized by Spedding (1973) for drying and filling canals.
- Plugging Action with Wet Cotton Pellet:
- Proposed by Donnenberg (1974) as a method to aid in the filling process.
Social Learning Theory
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Antecedent Determinants:
- Definition: Antecedent determinants refer to the factors that precede a behavior and influence its occurrence. This includes the awareness of the child regarding the context and the events happening around them.
- Application in Pedodontics: In a dental setting, if a child is aware of what to expect during a dental visit (e.g., through explanations from the dentist or caregiver), they are more likely to feel prepared and less anxious. Providing clear information about procedures can help reduce fear and promote cooperation.
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Consequent Determinants:
- Definition: Consequent determinants involve the outcomes that follow a behavior, which can influence future behavior. This includes the child’s perceptions and expectations about the consequences of their actions.
- Application in Pedodontics: If a child experiences positive outcomes (e.g., praise, rewards) after cooperating during a dental procedure, they are more likely to repeat that behavior in the future. Conversely, if they perceive negative outcomes (e.g., pain or discomfort), they may develop anxiety or avoidance behaviors.
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Modeling:
- Definition: Modeling is the process of learning behaviors through observation of others. Children often imitate the actions of adults, peers, or even media figures.
- Application in Pedodontics: Dental professionals can use modeling to demonstrate positive behaviors. For example, showing a child how to sit still in the dental chair or how to brush their teeth properly can encourage them to imitate those behaviors. Additionally, having older children or siblings model positive dental experiences can help younger children feel more comfortable.
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Self-Regulation:
- Definition: Self-regulation involves the ability to control one’s own behavior through self-monitoring, judgment, and evaluation. It includes setting personal goals and assessing one’s own performance.
- Application in Pedodontics: Encouraging children to set goals for their dental visits (e.g., staying calm during the appointment) and reflecting on their behavior afterward can foster self-regulation. Dental professionals can guide children in evaluating their experiences and recognizing their progress, which can enhance their sense of agency and responsibility regarding their oral health.
Maternal Attitudes and Corresponding Child Behaviors
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Overprotective:
- Mother's Behavior: A mother who is overly protective tends to shield her child from potential harm or discomfort, often to the point of being controlling.
- Child's Behavior: Children raised in an overprotective environment may become shy, submissive, and anxious. They may struggle with independence and exhibit fearfulness in new situations due to a lack of opportunities to explore and take risks.
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Overindulgent:
- Mother's Behavior: An overindulgent mother tends to give in to the child's demands and desires, often providing excessive affection and material rewards.
- Child's Behavior: This can lead to children who are aggressive, demanding, and prone to temper tantrums. They may struggle with boundaries and have difficulty managing frustration when they do not get their way.
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Under-affectionate:
- Mother's Behavior: A mother who is under-affectionate may be emotionally distant or neglectful, providing little warmth or support.
- Child's Behavior: Children in this environment may be generally well-behaved but can struggle with cooperation. They may be shy and cry easily, reflecting their emotional needs that are not being met.
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Rejecting:
- Mother's Behavior: A rejecting mother may be dismissive or critical of her child, failing to provide the emotional support and validation that children need.
- Child's Behavior: This can result in children who are aggressive, overactive, and disobedient. They may act out as a way to seek attention or express their frustration with the lack of nurturing.
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Authoritarian:
- Mother's Behavior: An authoritarian mother enforces strict rules and expectations, often without providing warmth or emotional support. Discipline is typically harsh and non-negotiable.
- Child's Behavior: Children raised in authoritarian environments may become evasive and dawdling, as they may fear making mistakes or facing punishment. They may also struggle with self-esteem and assertiveness.
Mental Age Assessment
Mental age can be assessed using the following formula:
- Mental Age = (Chronological Age × 100) / 10
Mental Age Descriptions
- Below 69: Mentally retarded (intellectual disability).
- Below 90: Low average intelligence.
- 90-110: Average intelligence. Most children fall within this range.
- Above 110: High average or superior intelligence.
Erythroblastosis fetalis
Blue-green colour of primary teeth only. It is due to excessive haemolysis of
RBC. The Staining occurs due to diffusion of bilirubin and biliverdin into the
dentin
Porphyria
Purplish brown pigmentation. to light and blisters on The other features hands
and face e Hypersensitivity are are red red coloured urine, urine,
Cystic fibrosis
(Yellowish gray to dark brown. It is due to tetracycline, which is the drug of
choice in this disease
Tetracycline
Yellow or yellow-brown pigmentation in dentin and to a lesser extent in enamel
that are calcifying during the time the drug is administered. The teeth
fluoresce yellow under UV light
Behavioral Classification Systems in Pediatric Dentistry
Understanding children's behavior in the dental environment is crucial for effective treatment and management. Various classification systems have been developed to categorize these behaviors, which can assist dentists in guiding their approach, systematically recording behaviors, and evaluating research validity.
Importance of Behavioral Classification
- Behavior Guidance: Knowledge of behavioral classification systems helps dentists tailor their behavior guidance strategies to individual children.
- Systematic Recording: These systems provide a structured way to document children's behaviors during dental visits, facilitating better communication and understanding among dental professionals.
- Research Evaluation: Behavioral classifications can aid in assessing the validity of current research and practices in pediatric dentistry.
Wright’s Clinical Classification
Wright’s clinical classification categorizes children into three main groups based on their cooperative abilities:
-
Cooperative:
- Children in this category exhibit positive behavior and are generally relaxed during dental visits. They may show enthusiasm and can be treated using straightforward behavior-shaping approaches. These children typically follow established guidelines and perform well within the framework provided.
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Lacking in Cooperative Ability:
- This group includes children who demonstrate significant difficulties in cooperating during dental procedures. They may require additional support and alternative strategies to facilitate treatment.
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Potentially Cooperative:
- Children in this category may show some willingness to cooperate but may also exhibit signs of apprehension or reluctance. They may need encouragement and reassurance to engage positively in the dental environment.
Frankl Behavioral Rating Scale
The Frankl behavioral rating scale is a widely used tool that divides observed behavior into four categories, ranging from definitely positive to definitely negative. The scale is as follows:
-
Rating 1: Definitely Negative:
- Characteristics: Refusal of treatment, forceful crying, fearfulness, or any other overt evidence of extreme negativity.
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Rating 2: Negative:
- Characteristics: Reluctance to accept treatment, uncooperativeness, and some evidence of a negative attitude (e.g., sullen or withdrawn behavior).
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Rating 3: Positive:
- Characteristics: Acceptance of treatment with cautious behavior at times; willingness to comply with the dentist, albeit with some reservations. The patient generally follows the dentist’s directions cooperatively.
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Rating 4: Definitely Positive:
- Characteristics: Good rapport with the dentist, interest in dental procedures, and expressions of enjoyment (e.g., laughter).
Application of the Frankl Scale
- Research Tool: The Frankl method is popular in research settings for assessing children's behavior in dental contexts.
- Shorthand Recording: Dentists can use shorthand notations (e.g., “+” for positive behavior, “-” for negative behavior) to quickly document children's responses during visits.
- Limitations: While the scale is useful, it may not provide sufficient clinical information regarding uncooperative children. For example, simply recording “-” does not convey the nuances of a child's behavior. A more descriptive notation, such as “- tearful,” offers better insight into the clinical problem.
Cherubism
Cherubism is a rare genetic disorder characterized by bilateral or asymmetric enlargement of the jaws, primarily affecting children. It is classified as a benign fibro-osseous condition and is often associated with distinctive radiographic and histological features.
Clinical Presentation
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Jaw Enlargement:
- Patients may present with symmetric or asymmetric enlargement of the mandible and/or maxilla, often noticeable at an early age.
- The enlargement can lead to facial deformities and may affect the child's appearance and dental alignment.
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Tooth Eruption and Loss:
- Teeth in the affected areas may exfoliate prematurely due to loss of support, root resorption, or interference with root development in permanent teeth.
- Spontaneous loss of teeth can occur, or children may extract teeth themselves from the soft tissue.
Radiographic Features
- Bone Destruction:
- Radiographs typically reveal numerous sharp, well-defined multilocular areas of bone destruction.
- There is often thinning of the cortical plate surrounding the affected areas.
- Cystic Involvement:
- The radiographic appearance is often described as "soap bubble" or "honeycomb" due to the multilocular nature of the lesions.
Case Report
- Example: McDonald and Shafer reported a case involving
a 5-year-old girl with symmetric enlargement of both the mandible and
maxilla.
- Radiographic Findings: Multilocular cystic involvement was observed in both the mandible and maxilla.
- Skeletal Survey: A complete skeletal survey did not reveal similar lesions in other bones, indicating the localized nature of cherubism.
Histological Features
- Microscopic Examination:
- A biopsy of the affected bone typically shows a large number of multinucleated giant cells scattered throughout a cellular stroma.
- The giant cells are large, irregularly shaped, and contain 30-40 nuclei, which is characteristic of cherubism.
Pathophysiology
- Genetic Basis: Cherubism is believed to have a genetic component, often inherited in an autosomal dominant pattern. Mutations in the SH3BP2 gene have been implicated in the condition.
- Bone Remodeling: The presence of giant cells suggests an active process of bone remodeling and resorption, contributing to the characteristic bone changes seen in cherubism.
Management
- Monitoring: Regular follow-up and monitoring of the condition are essential, especially during periods of growth.
- Surgical Intervention: In cases where the enlargement causes significant functional or aesthetic concerns, surgical intervention may be considered to remove the affected bone and restore normal contour.
- Dental Care: Management of dental issues, including premature tooth loss and alignment problems, is crucial for maintaining oral health.