1,721,075 research outputs found
Microsurgery flap in endodontic surgery: case report
Full text linkIn periodontal plastic surgery it is increasingly more evident the relavance of the protection of the gingival marginal anatomy through the realization of a conservative flap. Minimizing the recession of the treated tissue. A correct healing always needs to take into account the diameter and type of the suture and the time of removal from the wound
FDPS finish line design and tooth preparation technique
No full textThe purpose of this research is to perform and verify the modified 50° preparation suggested by the authors. This procedure was performed with a scrupulous standardization of the tooths preparation and then of the laboratory techniques to produce a metal-ceramic crown, and the same for the crown cementation technique of on the preparation of the original sample. After the esthetic evaluations, the obtained sample was included in EPON resin and sectioned in the lingual-vestibular sense. The sections were then observed with an optical microscope in different magnifications for the final evaluations. The geometric design proposed presents the advantages of two great preparation techniques: 50° preparation and circumferential shoulder. The 50° bevel designed in first phase of preparation and the second phase of the circumferential 27° shoulder, together allowed to satisfy the following requirements: aesthetic, marginal accuracy, periodontal compliance, conservation and stability. However, this type of prosthetic preparation is not the only one, but it is one of the marginal designs in prosthetic dentistry
Anatomic relationship between temporomandibular joint and middle ear
No full textThe present study was designed to identify a relationship between temporomandibular joint and tympanic cavity and potentially justify the possible clinical correlations between these two anatomical entities. For this reason the authors conducted an anatomic-pathological study about the temporomandibular joint (TMJ) and the neighboring anatomical areas of the middle ear by autopsy finds of human adults
The health of soft tissues around four dental implants loaded immediately supporting a 4-year-old fixed screw-retained prosthesis
Full text linkThe aim of this study was to assess the soft tissues health around the implant/abutment interfaces of
fixed screw-retained prosthesis supported by four dental implants after at least 1-year in function. All the
implants were placed between December 1, 2015 and April 30, 2019. Digital implant surgical planning
was performed for all the complete-arch rehabilitations and then full-guided surgery was performed.
The fixed-interim prostheses were delivered the day of the surgery and replaced by definitive prostheses
after the healing period. Patients were followed-up to determinate peri-implant scores, such as Plaque
Score (PS) and Bleeding on Probing (BoP). A total of 160 implants were placed in 37 patients, whereas 3
patients received both arches rehabilitated. A total of 40 complete-arch rehabilitations were performed,
26 in the maxilla and 14 in the mandible. Only 5 implants failed resulting in an overall implant survival
rate of 96.9%. BoP was detected around 6 implants (3.7%) and 16 implants showed a superficial amount
of plaque resulting a Plaque Score of 10%. Within the limitation of this study, it seems that the use of a
fixed screw-retained prostheses supported by four dental implants to rehabilitate edentulous jaws could
be a valid treatment option in the short and medium term without critical peri-implant issues. However,
several perspective studies with longer follow-up are needed to achieve more predictable results
A novel technique to close large perforation of sinus membrane
Full text linkMaxillary sinus floor elevation is generally accepted as a regenerative procedure to facilitate dental implants placement in the posterior atrophic maxilla. Although the sinus lift procedure is relatively safe, some potential problems could be occur. The most prevalent intraoperative complication is perforation of sinus membrane, which can lead to graft infection and early failure. The Aim of this work. Is to present a new technique to repair large perforation of sinus membrane. This case report. Is focused on a 10 mm perforation of sinus membrane occurred during preparation of the sinus window. The obliteration of the perforation was obtained by means of suturing sinus membrane with a resorbable material to the bone directly lateral to the osteotomy site. Sinus augmentation procedure could complete and the insertion of a graft was permitted
Clinical protocol with digital CAD/CAM chairside workflow for the rehabilitation of severely worn dentition patients
No full textThe purpose of this paper is to investigate the effectiveness and to describe a clinical protocol with digital CAD CAM chairside workflow for the rehabilitation of severely compromised and worn dentitions
TMJ’s capsule histological and macroscopical study: Relationship between ligamentous laxity and TMJ dysfunctions
No full textIn this study, the authors examined the capsular structures of 20 human temporomandibular joints (TMJ) macroscopically and microscopically, in order to improve knowledge of these structures, as part of their possible participation in the genesis of TMJ dysfunctions
Articular disc of temporomandibular joint: an anatomical and histological study. Functional considerations
No full textThe articular disc is an important component of the temporomandibular joint, whose morphology has been studied on autopsy and biopsy materials. The normal posterior attachment of the disc is usually described as having two layers, one upper and one lower. The upper layer consists of elastic fibres, collagen fibres, fat deposits and blood vessels. It is connected posteriorly to the anterior face of the post-glenoid tubercle, the tympanic wall of the temporal bone, the cartilaginous meatus and the parotid gland lining. The lower layer, on the other hand, consists of a compact lamina of non-elastic collagen fibres, attached to the posterior surface of the condyle. Elastic fibres are one of the main constituents of the extracellular matrix of many connective tissues, and they are believed to play a very important role in the normal functions of many tissues such as blood vessels, lungs and dermis. The existence and functional importance of a fibroelastic tissue in the upper layer of the posterior portion of the articular disc has been described in human TMJ and in joints of many animal species. In human TMJ, it is believed that elastic fibres in the posterior and anterior attachment regions may play an important role in the repositioning of the disc during jaw closure. This study presents a review of the current literature on the morphology of elastic fibres in the posterior portion of the joint disc and the role attributed to them during all functions
Temporomandibular joint and related structures: anatomical and Histological aspects
No full textIn literature, there is no unanimous agreement about the anatomical and functional characteristics of the temporomandibular joint (TMJ) and its components. The aim of this work is to increase the knowledge about components of the temporomandibular joint, starting from the revision of classical anatomy, through macroscopic and microscopic study, 20 samples of human dissected temporomandibular joints
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