Soft tissue integration of different abutment surfaces: an experimental study with histological analysis

2021 ◽  
Author(s):  
Luigi Canullo ◽  
David Penarrocha ◽  
Paolo Pesce ◽  
Cristina Zarauz ◽  
Rossano Lattanzio ◽  
...  
Keyword(s):  
Experimental Study ◽  
Soft Tissue ◽  
Histological Analysis ◽  
Tissue Integration

Simultaneous double laryngeal tumours: a diagnostic and therapeutic challenge

2021 ◽  
Vol 14 (2) ◽  
pp. e239797
Author(s):  
Fergus Cooper ◽  
Rafael Moleron ◽  
Andrea Chapman ◽  
Muhammad Shakeel
Keyword(s):  
Squamous Cell Carcinoma ◽  
Case Report ◽  
Soft Tissue ◽  
Histological Analysis ◽  
Primary Tumour ◽  
Second Primary ◽  
Soft Tissue Tumours ◽  
Rare Presentation ◽  
Laryngeal Tumours ◽  
Second Primary Tumour

Leiomyosarcomas are soft tissue tumours that rarely occur in the larynx. This case report describes the presentation and management of a 77-year-old man referred to the otolaryngology clinic with hoarseness who was found to have a large supraglottic leiomyosarcoma after panendoscopy and biopsies. He subsequently underwent laryngectomy for treatment of this tumour but, unexpectedly, the histological analysis of the laryngectomy specimen revealed a second primary tumour in the larynx—a squamous cell carcinoma (SCC). The patient had further treatment with neck radiotherapy. Three years after treatment, there are no signs of recurrence of either tumour. This case report discusses the very few similar cases of leiomyosarcoma coexisting with SCC in the larynx, collating the evidence surrounding the treatment of this rare presentation.

scholarly journals Soft tissue healing of immediate and delayed implants. An experimental study in beagle dogs.

2018 ◽  
Vol 29 ◽  
pp. 47-47
Author(s):  
David Palombo ◽  
Fabio Vignoletti ◽  
Javier Sanz-Esporrín ◽  
Javier Nuñez ◽  
Mariano Sanz
Keyword(s):  
Experimental Study ◽  
Soft Tissue ◽  
Beagle Dogs ◽  
Soft Tissue Healing ◽  
Tissue Healing

scholarly journals Antibacterial bioglass in dental implants: a canine clinical study

2021 ◽  
Vol 31 (Supplement_2) ◽  
Author(s):  
Silvia Gavinho ◽  
Manuel Graca ◽  
Pedro Prezas ◽  
João Borges ◽  
Jorge Silva ◽  
...  
Keyword(s):  
Clinical Practice ◽  
Clinical Study ◽  
Tissue Regeneration ◽  
Histological Analysis ◽  
Bone Structure ◽  
Bacterial Activity ◽  
Ct Scans ◽  
Fusion Method ◽  
Tissue Integration ◽  
Implant Coating

Abstract Background Peri-implantitis is considered the most challenging biological complication in implantology, as untreated disease can progress and result in implant loss. Therefore, disease prevention is crucial in daily clinical practice. It has been reported that the use of bioactive glass, as an implant coating, can stimulate tissue integration and accelerate tissue regeneration. Besides these properties, it is possible to promote bacterial activity by inserting silver into the bioglass Methods Bioglass with composition 45S5 was synthesised by the fusion method, replacing the amount of Na2CO3 by AgNO3 (BG 2% wt). The implants were resealed by the CoBlast® technique. Clinical cases with pathology of the mandible/maxilla were selected and implants dimensioned for the canine bone structure were applied. Results Three months after implantation, imaging exams, namely CT scans, showed no signs of early rejection by septic or cytotoxic loss. No decrease or loss of peri-implant bone was observed. In all cases the implants remained without signs of instability, and with sufficient support for the application of the exo-prosthesis or dental crown. The results of histological analysis showed no signs of infection or osteolysis. The zone of peri-implant fibrosis was not observable in the samples, showing a good evolution in implant osteointegration. Conclusions The results show promising evidences for the use of this biomaterial as a coating, since aseptic rejection, later on, and that related to the shape and biomaterials used in the implant's design, usually begins during the first 3 months.

scholarly journals Histological characterization of denticulate palatal plates in an Early Permian dissorophoid

PeerJ ◽  
2017 ◽  
Vol 5 ◽  
pp. e3727 ◽  
Author(s):  
Bryan M. Gee ◽  
Yara Haridy ◽  
Robert R. Reisz
Keyword(s):  
Soft Tissue ◽  
Histological Analysis ◽  
External Morphology ◽  
Tooth Replacement ◽  
Simple Description ◽  
Pulp Cavity ◽  
Histological Data ◽  
Tissue Implantation ◽  
Soft Tissue Covering

Denticles are small, tooth-like protrusions that are commonly found on the palate of early tetrapods. Despite their widespread taxonomic occurrence and similar external morphology to marginal teeth, it has not been rigorously tested whether denticles are structurally homologous to true teeth with features such as a pulp cavity, dentine, and enamel, or if they are bony, tooth-like protrusions. Additionally, the denticles are known to occur not only on the palatal bones but also on a mosaic of small palatal plates that is thought to have covered the interpterygoid vacuities of temnospondyls through implantation in a soft tissue covering; however, these plates have never been examined beyond a simple description of their position and external morphology. Accordingly, we performed a histological analysis of these denticulate palatal plates in a dissorophoid temnospondyl in order to characterize their microanatomy and histology. The dentition on these palatal plates has been found to be homologous with true teeth on the basis of both external morphology and histological data through the identification of features such as enamel and a pulp cavity surrounded by dentine. In addition, patterns of tooth replacement and ankylosis support the hypothesis of structural homology between these tiny teeth on the palatal plates and the much larger marginal dentition. We also provide the first histological characterization of the palatal plates, including documentation of abundant Sharpey’s fibres that provide a direct line of evidence to support the hypothesis of soft tissue implantation. Finally, we conducted a survey of the literature to determine the taxonomic distribution of these plates within Temnospondyli, providing a broader context for the presence of palatal plates and illustrating the importance of maintaining consistency in nomenclature.

scholarly journals The effects of hard and soft tissue grafting and individualization of healing abutments at immediate implants: an experimental study in dogs

2019 ◽  
Vol 49 (3) ◽  
pp. 171
Author(s):  
Daniel S. Thoma ◽  
Ui-Won Jung ◽  
Alfonso Gil ◽  
Myong Ji Kim ◽  
Kyeong-Won Paeng ◽  
...  
Keyword(s):  
Experimental Study ◽  
Soft Tissue ◽  
Immediate Implants

The Effect of the Supra-alveolar Soft Tissue on the Relapse of Orthodontic Treatment

1983 ◽  
Vol 10 (1) ◽  
pp. 50-52 ◽  
Author(s):  
Erik Larsson ◽  
György Schmidt
Keyword(s):  
Soft Tissue ◽  
Connective Tissue ◽  
Orthodontic Treatment ◽  
Histological Analysis ◽  
Inflammatory Cells ◽  
Connective Tissues ◽  
Control Side ◽  
Definite Difference ◽  
The Stability

Orthodontic closure in cases of aplasia as also in patients with spaces of other genesis is often associated with problems of relapse. In this study ten patients were treated orthodontically in order to close unacceptable interdental spaces. Five patients had paired aplasia. The remaining five patients had interdental spaces of different genesis. Supra-crestal connective tissue fibres w re surgically removed in all patients but only on one side of the jaw in the children with paired aplasia. The non-operated side of these children served as a control side. The stability of the orthodontic treatment was acceptable. No definite difference between the operated and the control side was recorded. The histological analysis of the removed tissue did not reveal anything unexpected but a rich infiltration of inflammatory cells. It is suggested that inflammation might aid the reorganization of the connective tissues in this area.

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