Permanent teeth
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Impact of Trauma on Permanent Teeth Development
Trauma in Primary Dentition and Its Effects on Permanent Teeth
Trauma to primary teeth can significantly impact the development of permanent teeth. Research indicates that injuries to deciduous teeth can damage the developing buds of permanent teeth, leading to various dental defects. The most common sequelae observed are enamel discoloration and hypoplasia, which are closely associated with the developmental phase of the tooth bud at the time of trauma. Intrusion of the primary tooth is particularly damaging, often resulting in notable enamel alterations in the permanent successor. Regular dental checkups are recommended for children who have experienced trauma to their primary teeth to ensure early diagnosis and treatment of any potential sequelae .
Success Rates of Pulpotomy in Permanent Teeth
Pulpotomy, a vital pulp treatment, has shown high success rates in permanent teeth, particularly when using bioactive materials like mineral trioxide aggregate (MTA). A systematic review and meta-analysis revealed that pulpotomies using ProRoot MTA had a significantly higher success rate compared to those using calcium hydroxide. However, no significant difference was found between MTA and other bioceramic materials like Calcium Enriched Mixture (CEM) or Biodentine. Despite the high success rates, the overall quality of evidence remains low, highlighting the need for more well-designed clinical trials .
Regenerative Endodontic Procedures for Immature Permanent Teeth
Regenerative endodontic procedures (REP) have been explored for treating necrotic immature permanent teeth. Studies have shown that using leukocyte and platelet-rich fibrin (LPRF) in REP can aid in peri-apical bone healing and further root development. However, the outcomes vary, with some cases showing no significant root development or apical closure. Despite these mixed results, REP remains a viable option for treating necrotic immature permanent teeth, although careful evaluation is necessary .
Long-term Outcomes of Deep Caries Treatment
Deep caries in permanent teeth can be managed effectively using partial-caries-removal (PCR) and stepwise-caries-removal techniques (SWT). Both methods have demonstrated high success rates in terms of pulp vitality and restorative outcomes over two years. However, PCR may result in fewer pulpal complications compared to SWT over a three-year period. The evidence suggests that both techniques are effective for managing deep dentine caries, with a high likelihood of tooth survival beyond two years .
Adhesive Bond Strength in Primary vs. Permanent Teeth
Adhesive bond strength differs between primary and permanent teeth, with permanent teeth generally exhibiting higher bond strengths. This difference is particularly pronounced in dentin, while enamel bond strengths do not show significant differences between the two dentitions. These findings underscore the importance of considering the type of dentition when selecting adhesive materials for dental treatments .
Prevalence of Erosive Tooth Wear in Children and Adolescents
Erosive tooth wear is a significant concern in the permanent teeth of children and adolescents, with an estimated prevalence of 30.4%. The prevalence rates vary widely depending on geographic location, sample size, and the clinical index used for detection. Studies conducted in the Middle East and Africa, and those using the Tooth Wear Index, reported higher prevalence rates. These findings highlight the need for standardized diagnostic criteria and preventive measures to address dental erosion in young populations .
Partial Pulpotomy for Irreversible Pulpitis in Permanent Teeth
Partial pulpotomy using bioactive cements like ProRoot MTA and Biodentine has shown high success rates in treating irreversible pulpitis in permanent teeth of young patients. Both materials demonstrated similar clinical and radiographic success, although Biodentine was associated with significantly less discoloration compared to ProRoot MTA. These results suggest that partial pulpotomy with either material is an effective treatment option for managing irreversible pulpitis in permanent teeth .
Vital Pulp Treatment for Traumatised Permanent Teeth
Vital pulp treatment (VPT) is effective for managing traumatised permanent teeth with complicated crown or crown-root fractures. Partial pulpotomy is the most commonly reported procedure, with success rates ranging from 82.9% to 100%. Other VPT methods like complete pulpotomy and direct pulp capping have lower success rates. Calcium hydroxide, Biodentine, and MTA are commonly used materials, all showing high clinical and radiographic success. Despite these positive outcomes, the quality of evidence is limited, indicating a need for more robust clinical studies .
Conclusion
The development and treatment of permanent teeth are influenced by various factors, including trauma to primary teeth, the choice of dental materials, and the techniques used for managing dental conditions. While current treatments like pulpotomy and regenerative endodontic procedures show promising results, there is a need for more high-quality research to establish long-term effectiveness and optimize treatment protocols. Regular dental checkups and preventive measures are essential to ensure the healthy development and maintenance of permanent teeth.
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