Sulcular and junctional epithelia form the gingival cuff. Sulcular epithelium faces the tooth without contacting it. Pdf the junctional epithelium is located at a strategically important interface between the gingival sulcus, populated with bacteria, and the. Histological and immunological characteristics of the. A considerable amount of effort has been directed at finding methods for modifying the nonkeratinized sulcular epithelium on the assumption that a keratinized surface may offer a better barrier to antigens and bacterial products present in the gingival sulcus. In contrast, junctional epithelium, and in some instances sulcular epithelium, are nonkeratinizing forms of epithelium. The rate of desquamation of the junctional epithelium is greater than that of the sulcular or oral epithelium, which may be related to the maintenance of the. Keratinizing potential of sulcular epithelium raul g. Histological and immunological characteristics of the junctional. However, of the three epithelia comprising the gingival epithelium, the junctional epithelium has much wider intercellular spaces than the sulcular epithelium and oral gingival epithelium. The main pathway for the transport of substances across the junctional and sulcular epithelia seems to be the intercellular spaces which, according to schroeder. Hence, the aim of the present study was to characterize the cell adhesion structure in the junctional epithelium compared with the other two epithelia.
Paradental cyst is an inclusion cyst of the junctional. The osmotic gradient is generated by macromolecular byproducts of the bacteria in the dental plaque that diffuse through the gingival. Apr, 2019 the junctional epithelium je is that epithelium which lies at, and in health also defines, the base of the gingival sulcus. Sulcular epithelium article about sulcular epithelium by. Morphological and functional characteristics of human. Both the sulcular epithelium and junctional epithelium are difficult to see in clinical examination of healthy gingival tissue. It is a thin, nonkeratinized, stratified squamous epithelium without rete pegs and extends from the coronal limit of the junctional epithelium to the crest of the gingival margin.
Junctional epithelium je, which is derived from odontogenic epithelial cells immediately after eruption, is believed to be gradually replaced by oral gingival epithelium oge over a lifetime. Fimbrial adhesins are an integral part of the additional but not obligatory polysacchariderich surface layer of bacteria denoted as glycocalyx. Junctional epithelium an overview sciencedirect topics. May 21, 2019 junctional epithelium je, which is derived from odontogenic epithelial cells immediately after eruption, is believed to be gradually replaced by oral gingival epithelium oge over a lifetime. Caffesse the university of michigan school of dentistry, department of periodontics, ann arbor, mich. Keratinization of the sulcular epitheliuma pointless pursuit. Je is a specialized gingival epithelium locating at the junction of periodontal soft tissue and hard tissue, and attaching to the crown or root like a collar. The vascular arrangement beneath the sulcular and junctional. This study aims to observe the morphological characteristics and identify the function characteristics of junctional epithelium je tissues and cultured je cells. The effect of intensive antibacterial therapy on the. He staining and image analysis were performed to measure and compare the morphological difference among je, oral. Je is unique because it is thought to originate from reduced enamel epithelium. Pdf in vitro reconstruction of human junctional and sulcular. Of these five were female and four were male animals fig 5.
The gingival epithelium around a tooth is divided into three functional compartments outer, sulcular, and junctional epithelium the outer. The epithelium, found on the body surface, also lines all cavities of the body as a layer of cells. Expression pattern of adhesion molecules in junctional. Bmc oral health morphological and functional characteristics of human gingival junctional epithelium qian jiang 0 youcheng yu 0 hong ruan 0 yin luo 0 xuehua guo 0 0 department of stomatology, zhongshan hospital fudan university, 180 fenglin road, shanghai 200032, china background. Sulcular epithelium synonyms, sulcular epithelium pronunciation, sulcular epithelium translation, english dictionary definition of sulcular epithelium. Junctional epithelium wikipedia republished wiki 2. Sulcular epithelium wikimili, the free encyclopedia. Bacterial adhesion to sulcular epithelium in periodontitis. The study was conducted to evaluate the histomorphological effects of low frequency noise on the periodontium of mice. Keratinization of sulcular epithelium was seen in nine out of ten specimens. Je and sulcular epithelium differ in both their morphology and origin. In experimental group c, the sulcular epithelium was composed of stratified squamous epithelium with keratinization. Visualization of junctional epithelial cell replacement by. Therefore, the junctional and sulcular epithelium are semipermeable allowing the transport of soluble macromolecules from the gingival sulcus into the underlying connective tissue.
Read the vascular arrangement beneath the sulcular and junctional epithelium in different degrees of cellular infiltration of dog gingiva, journal of periodontal research on deepdyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips. Continuing from the sulcular epithelium is the very thin nonkeratinised junctional epithelium, which attaches through the internal basal lamina to the enamel of the tooth. Pdf biological characteristics of junctional epithelium. Sulcular epithelium definition of sulcular epithelium by. The permeability of junctional and oral sulcular epithelia the. The junctional epithelium je is that epithelium which lies at, and in health also defines, the base of the gingival sulcus. The sulcular epithelium is that epithelium which lines the gingival sulcus. Gingival epithelium is made up of three components. In rodents, the je is clearly distinguished from ose. Sulcular epithelium has a more folded interface with the lamina propria. Quizlet flashcards, activities and games help you improve your grades.
Keratinization of the sulcular epitheliuma pointless. Research article open access morphological and functional. The epithelium has a high capacity for regeneration. The sulcular epithelium lines the sulcus, which is the space between the gingiva and the enamel surface of the tooth. The gingival epithelium around a tooth is divided into three functional compartments outer, sulcular, and junctional epithelium the outer epithelium extends from the mucogingival junction to the gingival margin where crevicular sulcular epithelium lines the sulcus at the base of the sulcus connection between gingiva and tooth is mediated. The probing depth of the gingival sulcus is measured by a calibrated periodontal probe. Junctional epithelium located at an interface of gingival sulcus and periodontal connective tissue, provides a dynamic seal around the teeth, protecting the. Je is unique because it is thought to originate from reduced enamel epithelium, manuscript received september 7, 1990. Sulcular epithelium the sulcular epithelium lines the gingival sulcus. The crevicular epithelium, or sulcular epithelium, stands away from the tooth, creating a gingival sulcus, or space. Junctional epithelium attaches the gingival margin to tooth structure and protects the underlying periodontal tissue from external stimuli and pathogenic microorganisms 3. Together, the sulcular epithelium and junctional epithelium form the dentogingival junctional tissue.
The oral epithelium around a tooth is divided into three functional compartments gingival, sulcular, and junctional epithelium the gingival epithelium extends from the mucogingival junction to the gingival margin where crevicularsulcular epithelium lines the sulcus at the base of the sulcus connection between gingiva and tooth. The present study provides for the first time ultrastructural evidence for fimbriamediated bacterial adhesion to sulcular epithelium in periodontitis. The gingival epithelium consists of the oral gingival epithelium oge, oral sulcular epithelium ose, and junctional epithelium je fig. The term junctional epithelium denotes the tissue that is affixed to the tooth on one side and to the oral sulcular epithelium and connective tissue on the other side 17, 100. It is argued here that keratinization in itself may not confer greater impermeability, for nonkeratinized epithelia also have been. In a healthycase scenario, the probe is gently inserted, slides by the sulcular epith. Regeneration of junctional epithelium and its innervation in. Morphological and functional characteristics of human gingival. The gingival epithelium around a tooth is divided into three functional compartments outer, sulcular, and junctional epithelium the outer epithelium extends from the mucogingival junction to the gingival margin where crevicularsulcular epithelium lines the sulcus at the base of the sulcus connection between gingiva and tooth is mediated. Junctional epithelium or epithelial attachment around. In vitro reconstruction of human junctional and sulcular epithelium. It is apically bounded by the junctional epithelium and meets the epithelium of the oral cavity at the height of the free gingival margin. Junctional epithelium is primarily formed by the fusion of. As formation of a surface with barrier properties seems to be a concomitant of epithelial differentiation while attachment is a property of relatively undifferentiated epithelial cells, attempts to induce junctional epithelium to differentiate could result in a loss of epithelial attachment to the tooth.
In vitro reconstruction of human junctional and sulcular. The je mediates the attachment of gingiva to the teeth through hemidesmosomes and the internal basal lamina with a unique basement membrane bm composition, while being attached to the connective tissue by the external basal lamina, containing. This study aims to observe the morphological characteristics and identify the function characteristics of. The two main types of epithelium are the stratified laminated epithelium and the glandular epithelium. Regeneration of junctional epithelium and its innervation. Aug 03, 2015 the gingival epithelium around a tooth is divided into three functional compartments outer, sulcular, and junctional epithelium the outer epithelium extends from the mucogingival junction to the gingival margin where crevicularsulcular epithelium lines the sulcus at the base of the sulcus connection between gingiva and tooth is mediated. Thin nonkeratinised stratified squamous epithelium no granulosum and corneum layers, extends from the coronal end of the junctional epithelium to the crest of the gingival margin.
Read regeneration of junctional epithelium and its innervation in adult rats. Half of each biopsy was exposed in vitro to tritiated thymidine to determine mitotic activity of the sulcular and junctional epithelium. The crevicular epithelium, or sulcular epithelium, stands away from the tooth, creating a gingival sulcus, or space that is filled with gingival crevicular fluid gcf see figure 101. The university of michigan school of dentistry, department of periodontics, ann arbor, mich. The oe is a keratinizing form of epithelium and provides a very effective physical barrier to microbial invasion of the underlying gingival connective tissue ct.
The sulcular epithelium is extremely important, because it may act as a. Among them, the je attaches to the tooth surface via hemidesmosomes, which forms the frontline of defense against periodontal bacterial infection. These cell counts were related to the if staining patterns fig. Paraffin sections of human molar or premolar on the gingival buccolingual side were prepared from 6 subjects. The effect of intensive antibacterial therapy on the sulcular. Gingival and dentogingival junctional tissue pocket. Sulcular fluid definition of sulcular fluid by medical. Junctional epithelium wikimili, the free encyclopedia.
This work was funded by the medical research council. Apr 22, 2014 the oral epithelium around a tooth is divided into three functional compartments gingival, sulcular, and junctional epithelium the gingival epithelium extends from the mucogingival junction to the gingival margin where crevicularsulcular epithelium lines the sulcus at the base of the sulcus connection between gingiva and tooth. The cyst can thus be considered as a kind of inclusion cyst arising in the periodontal pocket, most. The junctional epithelium is the epithelial component of the dentogingival unit that is in contact with the tooth surface. Keratinizing potential of sulcular epithelium caffesse. Pdf background the aim of this study was to develop and characterize. The junctional epithelium je adjacent to the tooth is that part of the gingiva which attaches the connective tissue to the tooth surface fig.
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