Actinomyces radicidentis | |
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Scientific classification ![]() | |
Domain: | Bacteria |
Phylum: | Actinomycetota |
Class: | Actinomycetia |
Order: | Actinomycetales |
Family: | Actinomycetaceae |
Genus: | Actinomyces |
Species: | A. radicidentis |
Binomial name | |
Actinomyces radicidentis Collins et al. 2001 [1] | |
Type strain | |
CCUG 36733 [2] CIP 106352 DSM 15433 |
Actinomyces radicidentis is a species in the genus Actinomyces , first isolated from infected root canals of teeth. Once characterized, it has since been found to be present in failed root canal treatments. [3] Its pathogenicity has been suggested to be due to an ability to form cell aggregates, held together by embedding in an extracellular matrix in host tissues. Like other pathogenic Actinomyces, by collectively finding itself in a protected biofilm environment can evade elimination by host defenses, including phagocytosis. [4]
Endodontics is the dental specialty concerned with the study and treatment of the dental pulp.
The inferior labial frenulum, or frenulum labii inferioris. is the frenulum connecting the lower gums with the lower lip.
A root end surgery, also known as apicoectomy, apicectomy, retrograde root canal treatment or root-end filling, is an endodontic surgical procedure whereby a tooth's root tip is removed and a root end cavity is prepared and filled with a biocompatible material. It is an example of a periradicular surgery.
Dentigerous cyst, also known as follicular cyst is an epithelial-lined developmental cyst formed by accumulation of fluid between the reduced enamel epithelium and crown of an unerupted tooth. It is formed when there is an alteration in the reduced enamel epithelium and encloses the crown of an unerupted tooth at the cemento-enamel junction. Fluid is accumulated between reduced enamel epithelium and the crown of an unerupted tooth. Dentigerous cyst is the second most common form of benign developmental odontogenic cysts.
“Lateral periodontal cysts (LPCs) are defined as non-keratinised and non-inflammatory developmental cysts located adjacent or lateral to the root of a vital tooth.” LPCs are a rare form of jaw cysts, with the same histopathological characteristics as gingival cysts of adults (GCA). Hence LPCs are regarded as the intraosseous form of the extraosseous GCA. They are commonly found along the lateral periodontium or within the bone between the roots of vital teeth, around mandibular canines and premolars. Standish and Shafer reported the first well-documented case of LPCs in 1958, followed by Holder and Kunkel in the same year although it was called a periodontal cyst. Since then, there has been more than 270 well-documented cases of LPCs in literature.
The calcifying epithelial odontogenic tumor (CEOT), also known as a Pindborg tumor, is an odontogenic tumor first recognized by the Danish pathologist Jens Jørgen Pindborg in 1955. It was previously described as an adenoid adamantoblastoma, unusual ameloblastoma and a cystic odontoma. Like other odontogenic neoplasms, it is thought to arise from the epithelial element of the enamel origin. It is a typically benign and slow growing, but invasive neoplasm.
The lateral palpebral raphe is a ligamentous band near the eye. Its existence is contentious, and many sources describe it as the continuation of nearby muscles. It is formed from the lateral ends of the orbicularis oculi muscle. It connects the orbicularis oculi muscle, the frontosphenoidal process of the zygomatic bone, and the tarsi of the eyelids.
Focal infection theory is the historical concept that many chronic diseases, including systemic and common ones, are caused by focal infections. In present medical consensus, a focal infection is a localized infection, often asymptomatic, that causes disease elsewhere in the host, but focal infections are fairly infrequent and limited to fairly uncommon diseases. Focal infection theory, rather, so explained virtually all diseases, including arthritis, atherosclerosis, cancer, and mental illnesses.
Oral microbiology is the study of the microorganisms (microbiota) of the oral cavity and their interactions between oral microorganisms or with the host. The environment present in the human mouth is suited to the growth of characteristic microorganisms found there. It provides a source of water and nutrients, as well as a moderate temperature. Resident microbes of the mouth adhere to the teeth and gums to resist mechanical flushing from the mouth to stomach where acid-sensitive microbes are destroyed by hydrochloric acid.
Oral Surgery, Oral Medicine, Oral Pathology, and Oral Radiology is a monthly peer-reviewed medical journal that covers research in oral surgery, medicine, pathology, radiology, and endodontics published by Mosby. It was originally established as Oral Surgery, Oral Medicine, and Oral Pathology in 1948, changing its name to Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontology in 1995, and acquiring its current name in 2012. It is an official journal of the American College of Oral and Maxillofacial Surgery, American Academy of Oral and Maxillofacial Radiology, American Academy of Oral Medicine, and the American Academy of Oral and Maxillofacial Pathology. According to the Journal Citation Reports, the journal has a 2020 impact factor of 2.589.
Arachnia propionica is a Gram positive, aerotolerant anaerobic species of Arachnia, found as part of the normal human oral flora.
The red complex is a group of bacteria that are categorized together based on their association with severe forms of periodontal disease. The red complex—among a number of other complexes—were classified by Sigmund Socransky in 1998.
A panoramic radiograph is a panoramic scanning dental X-ray of the upper and lower jaw. It shows a two-dimensional view of a half-circle from ear to ear. Panoramic radiography is a form of focal plane tomography; thus, images of multiple planes are taken to make up the composite panoramic image, where the maxilla and mandible are in the focal trough and the structures that are superficial and deep to the trough are blurred.
Dialister pneumosintes is a nonfermentative, anaerobic, gram-negative rod that grows with small, circular, transparent, shiny, smooth colonies on blood agar. D. pneumosintes has been recovered from deep periodontal pockets, but little is known about the relationship between the organism and destructive periodontal disease.
Platelet-rich fibrin (PRF) or leukocyte- and platelet-rich fibrin (L-PRF) is a derivative of PRP where autologous platelets and leukocytes are present in a complex fibrin matrix to accelerate the healing of soft and hard tissue and is used as a tissue-engineering scaffold for endodontics. PRF falls under FDA Product Code KST, labeling it as a blood draw/Hematology product classifying it as 510(k) exempt.
Ductal papilloma is a group of rare and benign papillary salivary gland tumors arising from the duct system:
José Freitas Siqueira Jr. was born in Miracema, Rio de Janeiro, Brazil, in October 1967. He received his DDS from Gama Filho University, Rio de Janeiro in 1989, and his endodontic certificate from Federal University of Rio de Janeiro in 1991. In 1996, he received his master's degree in microbiology and immunology from Federal University of Rio de Janeiro. He concluded his PhD in microbiology and immunology in 1998 at Federal University of Rio de Janeiro. Since 2002, Siqueira is the chairman of endodontics, director of the postgraduate program in endodontics and head of the molecular microbiology laboratory at Estácio de Sá University, in Rio de Janeiro, Brazil.
In the dental specialty of endodontics, periradicular surgery is surgery to the external root surface. Examples of periradicular surgery include apicoectomy, root resection, repair of root perforation or resorption defects, removal of broken fragments of the tooth or a filling material, and exploratory surgery to look for root fractures.
Rüdiger Emshoff is a German oral and maxillofacial surgeon and associate professor at the Medical University of Innsbruck, where he is head of the Orofacial Pain and Temporomandibular Disorder Unit. Emshoff is known for his work in the field of chronic orofacial pain management with a focus on the development of non-invasive and minimally-invasive methods in the diagnosis and treatment of temporomandibular joint dysfunction.
Chondrodysplasia Grebe type is a rare genetic disorder. It is caused by a mutation to the GDF5 gene. This mutation may be inherited in an autosomal recessive pattern.