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Made available in DSpace on 2022-04-28T17:30:34Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-12-28 Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Introduction: Gingival recession (GR) is a relevant clinical condition due to its high prevalence worldwide, which leads to aesthetic demands and dentin hypersensitivity. Collagen matrices have been associated with different designs of coronally advanced flaps (CAFs) to treat GR defects. However, the literature lacks long-term follow-up of this treatment option. The aim of this study is to present the long-term follow-up (up to 7 years) of two GR defects (associated or not with noncarious cervical lesion) treated with a CAF and a collagen matrix (CM). Case presentation Case 1 underwent a CAF associated with a CM to treat a single GR defect. After 7 years, Case 1 presented with 3 mm of recession reduction, which corresponds with the 85.7% of root coverage. Case 2 presented two GR defects associated with noncarious cervical lesions (NCCLs). The NCCLs were partially restored with resin composite and then underwent a modified CAF for multiple defects and a CM. After 5 years of follow-up, Case 2 presented with 1.5 and 2.5 mm of recession reduction, which corresponds with the average 83.3% defect coverage. Conclusion These two cases may show that CMs can provide long-term stable outcomes in the treatment of GR defects. Fed Univ Pernambuco UFPE, Dept Prosthesis & Surg Orofacial, Recife, PE, Brazil Sao Paulo State Univ, Inst Sci & Technol, Div Periodont, UNESP, Av Engn Francisco Jose Longo 777, BR-12245000 Sao Jose Dos Campos, SP, Brazil Private Educ Inst, Sao Paulo, Brazil Sao Paulo State Univ, Inst Sci & Technol, Div Periodont, UNESP, Av Engn Francisco Jose Longo 777, BR-12245000 Sao Jose Dos Campos, SP, Brazil CAPES: 001 CNPq: 304269/2019-0

To identify the primary reasons for tooth extraction in a Brazilian adult population.Interviews and oral examinations were conducted with 466 subjects aged from 18-76 years in the city of Maceió, Brazil. Frequency distributions, means and medians were calculated and the chi-square test was used to determine the level of significance. A logistic regression model was used to evaluate the variables associated with reasons for tooth extraction.Of the 466 extractions, 295 (63.3%) were due to dental caries, 61 (13.1%) due to periodontal disease, 56 (12.0%) for orthodontic reasons, 32 (6.9%) at the patient's request, 15 (3.2%) for pre-prosthetic reasons, four (0.9%) due to pericoronitis, two (0.4%) due to trauma and one (0.2%) for other reasons. Tooth extraction due to caries and other causes (excluding periodontal disease) shows a significant association with family income, toothache, type of health centre (public or private), educational level (P0.001) and marital status (P = 0.002). The logistic regression model has shown that patients undergoing treatment at a public health centre, those suffering from toothache or with an incomplete secondary education were more likely to lose their teeth due to caries, with educational level as the strongest indicator. For tooth extraction due to periodontal disease and other causes (excluding dental caries) the variables age, family income, type of health centre, tooth types (anterior or posterior), educational level (P0.001) and toothache (P = 0.006) were statistically significant, and age was the only associated variable in the logistic regression model.Dental caries was the main cause of tooth extraction in the study group, following tooth extraction due to periodontal disease.

Objetivo: O objetivo do estudo foi comparar o uso da matriz MucograftÒ (MC) ao enxerto de tecido conjuntivo subepitelial (ETCS), ambos associados a técnica de avanço coronal do retalho modificado (ACRM), no tratamento de recessões gengivais (RGs) RT1 múltiplas em área estética, avaliando a não-inferioridade do grupo teste (ACR+MC) em relação ao grupo controle (ACR+ETCS), em até 6 meses de acompanhamento. Materiais e métodos: Os pacientes incluídos no tratamento deveriam apresentar 6 RGs adjacentes em área estética. O resultado da alocação aleatória e de perdas na amostra acarretaram em 20 pacientes no grupo teste e 16 pacientes no grupo controle. Os parâmetros clínicos avaliados, e analisados por meio dos testes de Mann-Whitney e Friedman, foram: redução da altura da recessão gengival (AR), profundidade de sondagem (PS), nível de inserção clínica (NIC), largura da RG (LR), altura da mucosa ceratinizada (AMC) e espessura da mucosa ceratinizada (EMC). Estes desfechos também foram avaliados de acordo com o fenótipo gengival. Para os desfechos centrados no paciente (PROMS), foi utilizada a escala visual analógica (VAS) e o questionário OHIP-14 para análise do impacto na qualidade de vida dos pacientes. O questionário para estética do sorriso (RES) avaliou a percepção estética do profissional. Os períodos de avaliação foram: inicial (bsl), 3 e 6 meses. A avaliação de não-inferioridade foi realizada, por meio do intervalo de confiança, para verificação da relevância clínica na comparação entre os grupos, de acordo com a margem de nãoinferioridade pré-estabelecida (0,75). Resultados: O grupo controle apresentou melhores resultados para a redução da AR (p0,05). Os resultados dos PROMS mostraram que grupo teste apresentou menor morbidade pós-operatória (p0,05). Nos períodos de 3 e 6 meses não houve diferença estatística entre os grupos para a percepção estética do paciente e do profissional (p>0,05). Conclusão: O presente estudo clínico randomizado controlado demonstrou que a MC pode ser considerada uma alternativa viável ao ETCS no RR de RG múltiplas em áreas estéticas extensas. São necessários estudos futuros, com a utilização da MC no RR em defeitos múltiplos extensos, comparando fenótipos gengivais e com maior tempo de acompanhamento Objective: The aim of the study was to compare the use of Mucograft matrix (MC) to subepithelial connective tissue graft (ETCS), both associated with the modified coronally advanced flap technique (ACRM), in the treatment of multiple RT1 gingival recessions (RGs) in aesthetic area, evaluating the non-inferiority of the test group (ACR+MC) in relation to the control group (ACR+ETCS), in 6 months of follow-up. Materials and methods: Patients included in the treatment should have 6 adjacent GRs in the esthetic area. The result of random allocation and sample losses resulted in 20 patients in the test group and 16 patients in the control group. The clinical parameters evaluated, and analyzed by Mann-Whitney and Friedman tests, were: reduction the gingival recession height (AR), probing depth (PS), clinical attachment level (NIC), gingival recession width (LR), keratinized mucosa height (AMC) and keratinized mucosa thickness (EMC). These outcomes were also evaluated according to gingival phenotype. For patient-centered outcomes (PROMS), the visual analogue scale (VAS) and the OHIP-14 questionnaire were used to analyze the impact on patients\' quality of life. The Root coverage esthetic score questionnaire (RES) assessed the professional\'s aesthetic perception. The evaluation periods were: initial (bsl), 3 and 6 months. The assessment of non-inferiority was performed using the confidence interval to verify the clinical relevance in the comparison between groups, according to the pre-established non-inferiority margin (0.75). Results: The control group showed better results for the reduction of AR (p0.05). Results from PROMS showed that the test group had lower postoperative morbidity (p0.05). In the periods of 3 and 6 months, there was no statistical difference between the groups for the aesthetic perception of the patient and the professional (p>0.05). Conclusion: The present randomized controlled clinical study demonstrated that CM can be considered a viable alternative to ETCS in the RR of multiple GR in extensive esthetic areas. Future studies are needed, with the use of CM in RR in multiple extensive defects, comparing gingival phenotypes and with longer follow-up time.