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Concrescence of teeth — Clinical Guidelines

Overview

Concrescence of teeth, often referred to as tooth concrescence or fusion, is a developmental anomaly characterized by the premature union of two or more adjacent teeth during their formative stages. This condition can affect both primary and permanent dentition and may manifest clinically as a single, larger tooth with abnormal morphology and occlusal relationships. Understanding the diagnosis and management of concrescence is crucial for effective dental treatment planning, particularly in ensuring proper occlusion and preventing functional and aesthetic issues. While the literature on concrescence is somewhat limited, recent studies have shed light on specific techniques that can enhance diagnostic accuracy and treatment outcomes, particularly in the context of restorative procedures.

Diagnosis

Diagnosing concrescence involves a combination of clinical examination and radiographic assessment. Clinicians should be vigilant for signs such as an unusually large tooth, altered morphology, and occlusal discrepancies that suggest the fusion of adjacent teeth. The research by [PMID:38583994] provides valuable insights into enhancing diagnostic precision, particularly in evaluating bond quality, which indirectly supports the assessment of tooth integrity in cases of concrescence. This study highlighted that specimens with pre-etching exhibited lower microleakage scores, indicating that this technique could be valuable for clinicians assessing the structural integrity and bond quality of tooth surfaces in clinical settings. In practice, incorporating pre-etching protocols during initial diagnostic evaluations can help identify subtle weaknesses or areas of concern in the tooth structure affected by concrescence, thereby guiding more accurate diagnosis and subsequent treatment planning. Radiographic imaging, including bitewing and panoramic X-rays, is essential for visualizing the extent of fusion and any associated anomalies that may not be apparent clinically.

Clinical Presentation and Differential Diagnosis

Patients with concrescence may present with a variety of symptoms depending on the severity and location of the anomaly. Common clinical presentations include difficulty in cleaning due to complex tooth anatomy, increased susceptibility to caries, and malocclusion affecting chewing efficiency and aesthetics. Differential diagnosis is critical to rule out other conditions such as gemination, twinning, or odontomas, which can present similarly. Clinicians should consider a thorough history and comprehensive examination, including palpation and careful inspection of the tooth structure, alongside advanced imaging techniques to differentiate concrescence from these other anomalies. The diagnostic approach should aim to delineate the extent of fusion and any associated complications, ensuring that appropriate management strategies are tailored to the specific needs of the patient.

Management

The management of concrescence focuses on restoring function, aesthetics, and preventing further complications such as caries and periodontal issues. The study by [PMID:38583994] demonstrated that pre-etching enamel significantly increased the shear bond strength of adhesive resin systems (SARs), suggesting a clinical benefit in enhancing the adhesion of restorative materials to tooth surfaces affected by concrescence. This finding is particularly relevant as it underscores the importance of robust bonding techniques in achieving durable restorations.

Restorative Approaches

Enamel Pre-Etching: Implementing a thorough pre-etching protocol before applying adhesive resins can significantly improve the bond strength, crucial for maintaining the integrity of restorations in teeth with compromised structural integrity due to concrescence. This technique ensures better adhesion, reducing the risk of microleakage and subsequent complications.

Customized Restorative Materials: Utilizing restorative materials that offer high flexural strength and wear resistance can help manage the unique occlusal demands posed by concrescence. Composite resins and ceramic restorations may be considered based on the extent of the anomaly and patient preferences.

Occlusal Adjustment: Addressing occlusal discrepancies is essential to prevent functional issues and reduce the risk of further tooth wear. This may involve selective grinding or the use of occlusal guards to optimize bite mechanics.

Preventive Measures

Enhanced Oral Hygiene: Patients with concrescence require meticulous oral hygiene practices to mitigate the increased risk of caries and periodontal disease due to complex tooth anatomy. Regular professional cleanings and patient education on proper brushing and flossing techniques are paramount.

Fluoride Therapy: Application of fluoride treatments can strengthen enamel and reduce the susceptibility to caries, particularly in areas where the tooth structure may be weakened by the fusion process.

Follow-Up and Monitoring

Regular follow-up appointments are crucial to monitor the condition of restorations and overall tooth health. Clinicians should assess for signs of recurrent caries, debonding of restorations, and any changes in occlusion. Periodic radiographic evaluations can help track the long-term stability of the treatment outcomes and detect any emerging issues early.

Key Recommendations

Diagnostic Precision: Employ pre-etching techniques during diagnostic evaluations to assess bond quality and structural integrity of teeth affected by concrescence, enhancing diagnostic accuracy.

Restorative Bond Strength: Utilize enamel pre-etching protocols before applying adhesive resins to maximize bond strength and durability of restorations.

Comprehensive Treatment Planning: Tailor restorative approaches to address both functional and aesthetic needs, incorporating customized materials and occlusal adjustments as necessary.

Ongoing Care: Implement rigorous oral hygiene protocols and schedule regular follow-ups to monitor the long-term success of interventions and manage potential complications effectively.

By integrating these evidence-based practices, clinicians can provide optimal care for patients with concrescence, ensuring improved oral health outcomes and quality of life.

References

1 Hayashi K, Ishii R, Takamizawa T, Aoki R, Muto R, Suda S et al.. Influence of etching mode on bonding performance of self-adhesive flowable resin composites to bovine teeth. Dental materials journal 2024. link

1 papers cited of 14 indexed.

Concrescence of teeth