Success rate of fractured teeth receiving modified crown lengthening surgery and restorations

Abstract

Background Whether to preserve a structurally compromised tooth or remove it is a dilemma often encountered by clinicians. The aim of this study was to assess the long-term success rate of fractured teeth preserved by modified crown lengthening surgery and restorations. Methods Thirty-nine patients with a total of 45 fractured teeth who had received modified crown lengthening surgery were recruited and examined. Numbers of teeth lost were recorded, and the criteria for successful teeth were defined. Kaplan–Meier estimator was used to determine the success rate. Possible risk factors were compared between successful and unsuccessful groups by a Cox regression analysis to explore the potential predictors of failure with a significant level at α = 0.05. Results The mean ± SD of success time without considering variants was 6.2 ± 0.6 years (95% CI 5.1–7.7). The mean survival rates ± SD at 1.0-, 2.0-, 3.0-, 5.0-, 7.0-, and 9.0-year intervals was 97.8 ± 2.2%, 92.2 ± 4.4%, 72.8 ± 7.9%, 68.2 ± 8.6%, 60.7 ± 10.5%, and 40.4 ± 13.6%, respectively. Failure cases in teeth with poor plaque control and step-shaped fracture margin were significantly more than those with good plaque control and knife-shaped fracture margin (HR = 7.237, p = 0.011; HR = 15.399, p = 0.006; respectively). Conclusions Fractured teeth treated with modified crown lengthening surgery are anticipated to have a high clinical success rate for 6.2 ± 0.6 years. Plaque control and fracture morphology appeared to be significantly associated with the success of the multidisciplinary treatment approach.

Deep margin elevation—Present status and future directions

“…The restorative management of anterior teeth with secondary caries, root caries, and crown‐root fractures frequently presents a challenge 1,67 . Yet, case reports aside, evidence on DME in anterior teeth is scarce 68 .…”

“…The restorative management of anterior teeth with secondary caries, root caries, and crown-root fractures frequently presents a challenge. 1,67 Yet, case reports aside, evidence on DME in anterior teeth is scarce. 68 Considering the advantages that DME may have over more invasive treatment methods such as surgical extrusion and crown lengthening, studies that investigate DME in anterior teeth are necessary.…”

Aumento De Coroa Clínica Para Reabilitação Oral: Uma Revisão Narrativa E Relato De Caso

“…Diante de situações de comprometimento corono-radiculares e invasão do espaço biológico, tem-se a preservação do mesmo por meio da técnica de aumento de coroa clínica (AAC). Essa é uma alternativa cirúrgica de tratamentos reabilitadores protéticos e restauradores complicados como, lesões cariosas, fraturas corono-radiculares com comprometimento subgengival e invasão do espaço biológico/tecido de inserção supracristal, de forma a possibilitar exposição de estrutura dentária restabelecendo um espaço biológico e, portanto, a saúde periodontal [11,12]. Logo, o objetivo dessa proposta é elucidar por meio de uma revisão narrativa e relato de caso, a importância da cirurgia de ACC funcional com finalidade protético-restauradora, indicando suas principais causas e consequências da invasão das estruturas dos tecidos de inserção supracrestais, bem como os procedimentos cirúrgicos mais utilizados para a compreendida reabilitação oral.…”

“…O ACC funcional pode ser feito empregando técnicas cirúrgicas por retalho deslocado apical, coronária ou lateralmente, sendo o primeiro mais citado na literatura, associado ou não com ressecção óssea[12,15,17]. manuais, como cinzéis e limas, ou instrumentos rotatórios como brocas e outros dispositivos de corte.…”