ABSTRACT
OBJECTIVES: The aims were to investigate whether the use of platelet-rich fibrin membranes (PRF) for socket filling could improve microarchitecture and intrinsic bone tissue quality of the alveolar bone after premolar extraction and to assess the influence of the surgical procedure before implant placement. MATERIAL AND METHODS: Twenty-three patients requiring premolar extraction followed by implant placement were randomized to three groups: (1) simple extraction and socket filling with PRF, (2) extraction with mucosal flap and socket filling with PRF, and (3) controls with simple extraction without socket filling. Implant placement was performed at week 8, and a bone biopsy was obtained for histomorphometric analysis. RESULTS: Analysis by microcomputed tomography showed better bone healing with improvement of the microarchitecture (P < 0.05) in group 1. This treatment had also a significant effect (P < 0.05) on intrinsic bone tissue quality and preservation of the alveolar width. An invasive surgical procedure with a mucosal flap appeared to completely neutralize the advantages of the PRF. CONCLUSIONS: These results support the use of a minimally traumatic procedure for tooth extraction and socket filling with PRF to achieve preservation of hard tissue.
Subject(s)
Blood Platelets , Bone Regeneration/drug effects , Fibrin/pharmacology , Membranes, Artificial , Tooth Extraction , Tooth Socket/drug effects , Adult , Aged , Alveolar Bone Loss/etiology , Alveolar Process/drug effects , Analysis of Variance , Dental Implantation, Endosseous , Eating , Female , Hardness Tests , Humans , Male , Middle Aged , Prospective Studies , Surveys and Questionnaires , Tooth Extraction/adverse effects , Tooth Extraction/methods , Tooth Socket/diagnostic imaging , Wound Healing/drug effects , X-Ray Microtomography , Young AdultABSTRACT
This case report describes the effect of complete denture abstention and subsequent rehabilitation with mandibular implant-supported overdentures (IOD) on masseter muscle thickness (MMT) in a 97-year-old patient. MMT was measured bilaterally using an ultrasound scanner during 1 year of wearing a conventional denture, after 101 days of voluntary denture abstention, and 3, 6, and 12 months after delivery of the IOD. MMT decreased by 17% during denture abstention following repeated implant surgery, and returned to 100% during the 12 months with the mandibular IOD. This case suggests that muscle bulk may be related to denture function.
