NEET MDS Lessons
Pedodontics
TetricEvoFlow
TetricEvoFlow is an advanced nano-optimized flowable composite developed by Ivoclar Vivadent, designed to enhance dental restorations with its superior properties. As the successor to Tetric Flow, it offers several key benefits:
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Optimum Surface Affinity: TetricEvoFlow exhibits excellent adhesion to tooth structures, ensuring a reliable bond and minimizing the risk of microleakage.
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Penetration into Difficult Areas: Its flowable nature allows it to reach and fill even the most challenging areas, making it ideal for intricate restorations.
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Versatile Use: This composite can serve as an initial layer beneath medium-viscosity composites, such as TetricEvoCeram, providing a strong foundation for layered restorations.
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Stability for Class V Restorations: TetricEvoFlow maintains its stability when required, making it particularly suitable for Class V restorations, where durability and aesthetics are crucial.
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Extended Applications: In addition to its use in restorations, TetricEvoFlow is effective for extended fissure sealing and can be utilized in adhesive cementation techniques.
Age-Related Psychosocial Traits and Skills for 2- to 5-Year-Old Children
Understanding the psychosocial development of children aged 2 to 5 years is crucial for parents, educators, and healthcare providers. This period is marked by significant growth in motor skills, social interactions, and language development. Below is a breakdown of the key traits and skills associated with each age group within this range.
Two Years
- Motor Skills:
- Focused on gross motor skills, such as running and jumping.
- Sensory Exploration:
- Children are eager to see and touch their environment, engaging in sensory play.
- Attachment:
- Strong attachment to parents; may exhibit separation anxiety.
- Play Behavior:
- Tends to play alone and rarely shares toys or space with others (solitary play).
- Language Development:
- Limited vocabulary; beginning to form simple sentences.
- Self-Help Skills:
- Starting to show interest in self-help skills, such as dressing or feeding themselves.
Three Years
- Social Development:
- Less egocentric than at two years; begins to show a desire to please others.
- Imagination:
- Exhibits a very active imagination; enjoys stories and imaginative play.
- Attachment:
- Continues to maintain a close attachment to parents, though may begin to explore social interactions with peers.
Four Years
- Power Dynamics:
- Children may try to impose their will or power over others, testing boundaries.
- Social Interaction:
- Participates in small social groups; begins to engage in parallel play (playing alongside peers without direct interaction).
- Expansive Period:
- Reaches out to others; shows an interest in making friends and socializing.
- Independence:
- Demonstrates many independent self-help skills, such as dressing and personal hygiene.
- Politeness:
- Begins to understand and use polite expressions like "thank you" and "please."
Five Years
- Consolidation:
- Undergoes a period of consolidation, where skills and behaviors become more deliberate and refined.
- Pride in Possessions:
- Takes pride in personal belongings and may show attachment to specific items.
- Relinquishing Comfort Objects:
- Begins to relinquish comfort objects, such as a blanket or thumb-sucking, as they gain confidence.
- Cooperative Play:
- Engages in cooperative play with peers, sharing and taking turns, which reflects improved social skills and emotional regulation.
Pulpotomy Techniques
Pulpotomy is a dental procedure performed to treat a tooth with a compromised pulp, typically in primary teeth. The goal is to remove the diseased pulp tissue while preserving the vitality of the remaining pulp. This procedure is commonly indicated in cases of carious exposure or trauma.
Vital Pulpotomy Technique
The vital pulpotomy technique involves the removal of the coronal portion of the pulp while maintaining the vitality of the radicular pulp. This technique can be performed in a single sitting or in two stages.
1. Single Sitting Pulpotomy
- Procedure: The entire pulpotomy procedure is completed in one appointment.
- Indications: This approach is often used when the pulp is still vital and there is no significant infection or inflammation.
2. Two-Stage Pulpotomy
- Procedure: The pulpotomy is performed in two appointments. The first appointment involves the removal of the coronal pulp, and the second appointment focuses on the placement of a medicament and final restoration.
- Indications: This method is typically used when there is a need for further evaluation of the pulp condition or when there is a risk of infection.
Medicaments Used in Pulpotomy
Several materials can be used during the pulpotomy procedure, particularly in the two-stage approach. These include:
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Formocresol:
- A commonly used medicament for pulpotomy, formocresol has both antiseptic and devitalizing properties.
- It is applied to the remaining pulp tissue after the coronal pulp is removed.
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Electrosurgery:
- This technique uses electrical current to remove the pulp tissue and can help achieve hemostasis.
- It is often used in conjunction with other materials for effective pulp management.
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Laser:
- Laser technology can be employed for pulpotomy, providing precise removal of pulp tissue with minimal trauma to surrounding structures.
- Lasers can also promote hemostasis and reduce postoperative discomfort.
Devitalizing Pastes
In addition to the above techniques, various devitalizing pastes can be used during the pulpotomy procedure:
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Gysi Triopaste:
- A devitalizing paste that can be used to manage pulp tissue during the pulpotomy procedure.
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Easlick’s Formaldehyde:
- A formaldehyde-based paste that serves as a devitalizing agent, often used in pulpotomy procedures.
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Paraform Devitalizing Paste:
- Another devitalizing agent that can be applied to the pulp tissue to facilitate the pulpotomy process.
Hypnosis in Pediatric Dentistry
Hypnosis: An altered state of consciousness characterized by heightened suggestibility, focused attention, and increased responsiveness to suggestions. It is often used to facilitate behavioral and physiological changes that are beneficial for therapeutic purposes.
- Use in Pediatrics: According to Romanson (1981), hypnosis is recognized as one of the most effective nonpharmacologic therapies for children, particularly in managing anxiety and enhancing cooperation during medical and dental procedures.
- Dental Application: In the field of dentistry, hypnosis is referred to as "hypnodontics" (Richardson, 1980) and is also known as psychosomatic therapy or suggestion therapy.
Benefits of Hypnosis in Dentistry
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Anxiety Reduction:
- Hypnosis can significantly alleviate anxiety in children, making dental visits less stressful. This is particularly important for children who may have dental phobias or anxiety about procedures.
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Pain Management:
- One of the primary advantages of hypnosis is its ability to reduce the perception of pain. By using focused attention and positive suggestions, dental professionals can help minimize discomfort during procedures.
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Behavioral Modification:
- Hypnosis can encourage positive behaviors in children, such as cooperation during treatment, which can reduce the need for sedation or physical restraint.
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Enhanced Relaxation:
- The hypnotic state promotes deep relaxation, helping children feel more at ease in the dental environment.
Mechanism of Action
- Suggestibility: During hypnosis, children become more open to suggestions, allowing the dentist to guide their thoughts and feelings about the dental procedure.
- Focused Attention: The child’s attention is directed away from the dental procedure and towards calming imagery or positive thoughts, which helps reduce anxiety and discomfort.
Implementation in Pediatric Dentistry
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Preparation:
- Prior to the procedure, the dentist should explain the process of hypnosis to both the child and their parents, addressing any concerns and ensuring understanding.
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Induction:
- The dentist may use various techniques to induce a hypnotic state, such as guided imagery, progressive relaxation, or verbal suggestions.
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Suggestion Phase:
- Once the child is in a relaxed state, the dentist can provide positive suggestions related to the procedure, such as feeling calm, relaxed, and pain-free.
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Post-Hypnosis:
- After the procedure, the dentist should gradually bring the child out of the hypnotic state, reinforcing positive feelings and experiences.
Tooth Replantation and Avulsion Injuries
Tooth avulsion is a dental emergency that occurs when a tooth is completely displaced from its socket. The success of replantation, which involves placing the avulsed tooth back into its socket, is influenced by several factors, including the time elapsed since the avulsion and the condition of the periodontal ligament (PDL) tissue.
Key Factors Influencing Replantation Success
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Time Elapsed Since Avulsion:
- The length of time between the loss of the tooth and its replantation is critical. The sooner a tooth can be replanted, the better the prognosis for retention and vitality.
- Prognosis Statistics:
- Replantation within 30 minutes: Approximately 90% of replanted teeth show no evidence of root resorption after 2 or more years.
- Replantation after 2 hours: About 95% of these teeth exhibit root resorption.
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Condition of the Tooth:
- The condition of the tooth at the time of replantation, particularly the health of the periodontal ligament tissue remaining on the root surface, significantly affects the outcome.
- Immediate replacement of a permanent tooth can sometimes lead to vitality and indefinite retention, but this is not guaranteed.
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Temporary Measure:
- While replantation can be successful, it should generally be viewed as a temporary solution. Many replanted teeth may be retained for 5 to 10 years, with a few lasting a lifetime, but others may fail shortly after replantation.
Common Avulsion Injuries
- Most Commonly Avulsed Tooth: The maxillary central incisor is the tooth most frequently avulsed in both primary and permanent dentition.
- Demographics:
- Avulsion injuries typically involve a single tooth and are three times more common in boys than in girls.
- The highest incidence occurs in children aged 7 to 9 years, coinciding with the eruption of permanent incisors.
- Structural Factors: The loosely structured periodontal ligament surrounding erupting teeth may predispose them to complete avulsion.
Recommendations for Management of Avulsed Teeth
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Immediate Action: If a tooth is avulsed, it should be replanted as soon as possible. If immediate replantation is not feasible, the tooth should be kept moist.
- Storage Options: The tooth can be stored in:
- Cold milk (preferably whole milk)
- Saline solution
- Patient's own saliva (by placing it in the buccal vestibule)
- A sterile saline solution
- Avoid: Storing the tooth in water, as this can damage the periodontal ligament cells.
- Storage Options: The tooth can be stored in:
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Professional Care: Seek dental care immediately after an avulsion injury to ensure proper replantation and follow-up care.
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.