ABSTRACT
Objective@#To evaluate the primary clinical outcomes of immediate provisionalization with a monolithic crown utilizing a novel chairside computer aided design and computer aided manufacture (CAD/CAM) workflow for single tooth immediate implant placement.@*Methods@#This pilot study was a prospective within-subjects design. Thirteen consecutive patients were included and diagnosed with untreatable single incisor or premolar with fine general and local anatomical conditions. The trial was conducted at Department of Implantology, Peking University School and Hospital of Stomatology, Beijing, between January 2016 and June 2016. The teeth were extracted atraumatically and implants were immediately placed in the fresh sockets. Two screw-retained interim crowns were fabricated for the same site utilizing different workflows, a monolithic lithium disilicate (LS2) crown produced by CEREC (Sirona, Germany) chairside CAD/CAM system (CER group) and a manually fabricated resin crown utilizing conventional workflow (CONV group) respectively. The patients were blinded to the group allocation of the two interim crowns. After the clinical try-in for both crowns in a randomized sequence, the patients' level of satisfaction was assessed with a virtual analogue scale (VAS) questionnaire. The restorations chosen by patients themselves were seated in the implants by one experienced prosthodontist. The accuracy, aesthetic effect and clinical time consumption of both groups were compared. Statistical analyses were performed with the Wilcoxon signed rank test.@*Results@#All patients were treated with atraumatic tooth extraction, immediate implant placement using flapless surgery and immediate provisionalization in a single visit. The interim crowns of both groups could be fitted with or without slight adjustments. For each patient, the interim crown of CER group was chosen to be seated with a relatively higher VAS result. The white esthetic score (WES) results demonstrated no statistically significant difference between CER group (7.5±1.1) and CONV group (7.9±0.9) (P>0.05). The mean total work time was significantly different resulting in (131.9±5.0) min for CER group and (205.2±6.3) min(P<0.05). The major difference lied in the laboratory work time, resulting in (113.5±6.3) min for CER group which was significantly shorter than (185.6±6.6) min for CONV group. As for impression taking time, the CER group (7.5±0.8) min was significantly shorter than CONV group (11.7± 1.1) min (P<0.05). However, analysis for clinical adjustment time showed a significantly longer time for CER group [(11.0±2.1) min vs (8.0±2.8) min, P<0.05]. After 3-6 months of observation, the overall survival rate was 100%. Screw loosening occurred in 4 patients and was tightened again. No other major complication soccurred.@*Conclusions@#The full digital workflow utilizing CEREC chairside CAD/CAM system to fabricate interim crowns after immediate implant placement in one single visit was feasible. It was more time-efficient and could effectively shorten the laboratory work time compared to the conventional workflow. Patients demonstrated high satisfaction and there was no statistical difference in WES results compared to the conventional workflow. Favorable clinical outcomes were gained in this short-term follow-up study.
ABSTRACT
For patients with systemic diseases who face difficulties visiting dental clinics, wearing fixed partial denture in the anterior region on the same day of tooth extraction can reduce the total period of treatment and the number of visits, as well as post-treatment psychological effect on the patient.
Subject(s)
Humans , Dental Clinics , Denture Design , Denture, Partial, Fixed , Tooth Extraction , ToothABSTRACT
FUNDAMENTO: la avulsión dentaria es la salida completa del diente de su alveolo, el mejor tratamiento para un niño es la reimplantación de su propio diente, pero la terapéutica ofrece grandes retos al profesional que dependen de múltiples factores. OBJETIVO: demostrar que la rehabilitación por prótesis inmediata, es una alternativa ante el fracaso de un reimplante dentario. CASO CLÍNICO: paciente masculino, de doce años de edad, que acudió con su padre a la consulta de prótesis estomatológica del Policlínico de atención a combatientes de los servicios médicos del MININT de Camagüey, porque hace dos años y medio le fue reimplantado el diente antero superior derecho al recibir un golpe en la cabeza que le provocó la salida del mismo de su alveolo y entonces presentó signos y síntomas característicos de una evolución desfavorable. CONCLUSIÓN: se comprobó la existencia de una reabsorción radicular inflamatoria avanzada, asociada a otros factores como: prolongado tiempo extraoral del diente reimplantado, deficiente medio de conservación, inadecuado tipo y tiempo de ferulización y el tórpido manejo endodóntico. La rehabilitación protésica inmediata fue el tratamiento adecuado para restablecer los parámetros psíquicos, estéticos y funcionales demandados por el paciente.
BACKGROUND: dental avulsion is the complete loss of a tooth from its alveolus; the best treatment for a child is the reimplantation of the own tooth but the therapeutics presents great challenges for the professionals that depend on many factors. OBJECTIVE: to demonstrate that the rehabilitation by means of immediate prosthesis is an alternative to the failure of a dental reimplantation. CLINICAL CASE: a twelve-year-old male patient that came with his father to the stomatological consultation of prosthesis of the policlinic for veterans of the medical service of the Ministry of Internal Affairs of Camagüey. Two and a half years ago, the patient underwent the reimplantation of the right anterosuperior tooth after receiving a blow to the head that caused the loss from the alveolus; then, the patient presented signs and symptoms characteristic of an unfavourable progress. CONCLUSIONS: the existence of an advanced inflammatory radicular reabsorption was confirmed, associated to other factors like: a prolonged extraoral time of the reimplanted tooth, a deficient conservation medium, inadequate type and time of splinting and the torpid endodontic handling. The immediate prosthetic rehabilitation was the suitable treatment to re-establish the psychic, aesthetic, and functional parameters required by the patient.