{Reference Type}: Journal Article
{Title}: Crown therapy in young individuals with amelogenesis imperfecta: Long term follow-up of a randomized controlled trial.
{Author}: Lundgren GP;Vestlund GM;Dahllöf G;
{Journal}: J Dent
{Volume}: 76
{Issue}: 0
{Year}: 09 2018
{Factor}: 4.991
{DOI}: 10.1016/j.jdent.2018.06.020
{Abstract}: Amelogenesis imperfecta (AI) is a rare, genetically determined defect in enamel mineralization. Several problems are associated with AI: hypersensitivity, wear, restorations requiring replacement, gingivitis, aesthetic problems, and social avoidance. We conducted a randomized controlled trial of crown therapy in young individuals with AI showing excellent results. This study reports results from a long-term-follow-up with focus on quality, longevity and adverse events.<BR>The RCT included 27 patients (aged 11-22 years) with severe AI in need of crown therapy and used a split-mouth technique. After placing 119 Procera® crowns and 108 IPS e.max Press crowns following randomization, we assessed longevity, quality, adverse events, and tooth sensitivity and calculated survival rates and success rates.<BR>We followed the original 227 crowns for 4.3-7.4 years (mean 5.5 ± 0.8). In all, 79% (193) crowns were followed for at least 5 years. The survival rate was 99.6% and the success rate, 94.7%; 95% of the crowns had excellent or acceptable quality. Due to suboptimal marginal integrity, 4% of the crowns required adjustment. Sensitivity problems decreased after crown therapy (p < 0.001). All adverse events occurred in patients aged 19-23 years and involved apical periodontitis (3% of teeth); all but two events were related to dental trauma in the actual tooth.<BR>Ceramic crown therapy in adolescents and young adults with severe forms of AI show excellent survival and success rates and longevity with few adverse events.<BR>Ceramic crown therapy can be recommended for adolescents and young adults with severe forms of amelogenesis imperfecta.