Odontoestomatologia

From peri-implant mucositis to peri-implantitis: Incidence and risk indicators in a university dental hospital sample with up to 10 years of follow-up

Tue, 14 Apr 2026 09:06:09 GMT

From peri-implant mucositis to peri-implantitis: Incidence and risk indicators in a university dental hospital sample with up to 10 years of follow-up Alahmari, Ahmad; Arsalan Askarizadeh, Amir; Barbosa de Figueiredo, Rui Pedro; García-García, Marta; Costa-Berenguer, Xavier; Sales Collado, Miquel; Valmaseda Castellón, Eduardo; Sánchez Torres, Alba Objectives: To determine the proportion of patients with peri‑implant mucositis who develop peri‑implantitis over a 1- to 10-year follow-up period, and to identify the variables associated with this progression. Materials and Methods: A retrospective cohort study was conducted including 97 patients with 204 dental implants diagnosed with peri‑implant mucositis. Clinical and radiographic examinations were performed, and compliance with supportive peri‑implant care (SPIC) was recorded. A multilevel multinomial logistic regression model was developed to identify the predictors of disease progression. Results: After a mean follow-up of 49.8 months, 23.7% of patients initially diagnosed with peri‑implant mucositis became healthy, 57.7% showed no change and remained with peri‑implant mucositis, while 18.5% progressed to peri‑implantitis. A history of periodontitis significantly increased the odds of presenting peri‑implant disease at the last follow-up appointment (p < 0.001). Conversely, regular compliance with SPIC, prostheses with an adequate design, and single-unit restorations significantly reduced the risk of progression (p < 0.001). Conclusions: Almost one fifth of patients with dental implants with peri‑implant mucositis are likely to develop peri‑implantitis after a mean follow-up of 4 years. A history of periodontitis, irregular supportive peri‑implant care and inadequate prosthetic design increase the likelihood of bone loss and progression to peri‑implantitis. Clinical Significance: This study emphasizes the importance of regular supportive peri‑implant care and appropriate prosthetic design to prevent progression from peri‑implant mucositis to peri‑implantitis, especially in patients with a history of periodontitis

Prediction of traction time for the alignment of impacted maxillary canines

Mon, 13 Apr 2026 07:42:02 GMT

Prediction of traction time for the alignment of impacted maxillary canines Rosa Gay, María Cristina de la; Valmaseda Castellón, Eduardo; Barbosa de Figueiredo, Rui Pedro; Hernández Mangas, Andrea; Camps Font, Octavi Background To identify which factors influence the traction time of impacted maxillary canines using a combined orthodontic-surgical approach and to create a multivariate model to predict canine traction time. Methods Patients undergoing traction of impacted maxillary canines by a single orthodontist were selected. Seventy patients (mean age±SD): 19.32±8.81) meeting the inclusion criteria were enrolled in the study. They had 89 impacted canines (69 palatally displaced and 20 in a buccal position). Variables that could be related to orthodontic treatment as a whole and to impaction and its treatment were recorded for each patient. The treatment predictors were explored by univariate Cox regression and multivariate generalized linear mixed models (GLMM). A multivariate analysis was performed using a mixed-effects parametric survival analysis (MMPSA) Weibull model to assess the contribution of each of the predictive variables and to create a multiple linear regression model to explain canine traction time. Results Cox regression showed significant association between traction time and age (p=0.013) and the number of failed appointments (p<0.001). An MMPSA Weibull model to build a predictive model based on the Akaike information criterion (AIC) showed that interceptive maxillary expansion significantly reduced traction time (p=0.002). In contrast, traction time increased with a wider angle of the impacted canine relative to the midline, with missed appointments, and with radiological overlap with lateral or central incisors. Conclusions The orthodontic treatment time to align impacted maxillary canines increases with radiological overlap with lateral and central incisors, a wider angle to the midline, the absence of interceptive maxillary expansion, and missed appointments.

In vivo analysis of early biofilm development and cell viability on implant-mimicking abutments at 24 h, 48 h, and 7 days

Fri, 29 Aug 2025 12:16:57 GMT

In vivo analysis of early biofilm development and cell viability on implant-mimicking abutments at 24 h, 48 h, and 7 days Muguerza-Guevara, Kevin; Cortés Acha, Berta; García-García, Marta; Barbosa de Figueiredo, Rui Pedro; Soler-Ollé, Agnès; Blanc, Vanessa; Valmaseda Castellón, Eduardo Introduction: The microbiota associated with peri-implant diseases has been described, though information about biofilm formation and development on dental implants remains scarce. Objectives: To analyze and compare biofilm formation and distribution at 24 h, 48 h and 7 days on experimental abutments simulating dental implants in peri-implant healthy patients. Material and methods: Experimental abutments with micro-threads and a modified rough surface were placed in healthy dental implants of 10 patients. Instructions were given not to clean the abutments for the duration of the study. Exclusion criteria included the use of antiseptics or antibiotics 30 days prior to recruitment or during the study period. After 24 h, 48 h and 7 days, the abutments were removed and stained using LIVE/DEAD stain, and two sides (buccal and palatal/lingual) and two areas (supragingival and subgingival) were assessed, with measurement of the mean biofilm covering area. Results: Twenty-nine experimental abutments placed in 10 patients were assessed. The total mean biomass coverage areas were 9.3%, 16.2% and 16.8% at 24 h, 48 h and 7 days, respectively, with significant differences being observed between 24 h and the subsequent timepoints (p < 0.05). Significantly greater supragingival biofilm coverage was observed at 7 days in comparison with the subgingival zone (21.85% versus 11.7%; p < 0.05). Conclusions: Biofilm coverage on healthy dental implants increases progressively during the first 48 h and then stabilizes. The biofilm is mainly composed of live cells in the supragingival and subgingival areas. After 7 days, the supragingival areas show significantly greater biofilm coverage.

Características odontológicas de la parálisis cerebral. Precauciones para su tratamiento

Tue, 09 May 2017 09:34:28 GMT

Características odontológicas de la parálisis cerebral. Precauciones para su tratamiento López Jiménez, Julián; Giménez Prats, Mª José; Boj Quesada, Juan Ramón Se revisan las características odontológicas de la parálisis cerebral, tanto de estructuras duras como blandas.