a dental drill or handpiece is a hand-held, mechanical instrument used to perform a variety of common dental procedures, including removing decay, polishing fillings, performing cosmetic dentistry, and altering prostheses.the handpiece itself consists of internal mechanical components which initiate a rotational force and provide power to the cutting instrument, usually a dental burr.
dentistry, also known as dental medicine and oral medicine, is a branch of medicine that consists of the study, diagnosis, prevention, and treatment of diseases, disorders, and conditions of the oral cavity, commonly in the dentition but also the oral mucosa, and of adjacent and related structures and tissues, particularly in the maxillofacial jaw and facial area.
abfraction is a theoretical concept explaining a loss of tooth structure not caused by tooth decay non-carious cervical lesions .it is suggested that these lesions are caused by forces placed on the teeth during biting, eating, chewing and grinding; the enamel, especially at the cementoenamel junction cej , undergoes large amounts of stress, causing micro fractures and tooth tissue loss.
a dental aerosol is an aerosol that is produced from dental instruments like ultrasonic scalers, dental handpieces, three-way syringes and other high-speed instruments.these aerosols are air suspended in the clinical environment. these aerosols can pose risks to the clinician, staff and other patients as well. the heavier particles >50 µm of the aerosols suspend in the air for relatively .
bruxism is a common behavior; reports of prevalence range from 8% to 31% in the general population. several symptoms are commonly associated with bruxism, including hypersensitive teeth, aching jaw muscles, headaches, tooth wear, and damage to dental restorations e.g. crowns and fillings .
xinglonggou is a neolithic through bronze age archaeological site complex consisting of three separate sites. the sites are located on a loess slope above the left bank of the mangniu river north of the qilaotu mountains in aohan banner, inner mongolia, china.xinglonggou is one of the most important sites of the early neolithic xinglongwa culture and provides evidence for the development of .
in 2010, procter & gamble rebranded the product as oral-b glide. popularity and sales. in 2006, crest glide was the second-ranked brand of dental floss in the united states, with sales in supermarkets and drug stores of $22 million and a market share of 18.8%, just behind johnson & johnson reach. environmental and health concerns
dental attrition is a type of tooth wear caused by tooth-to-tooth contact, resulting in loss of tooth tissue, usually starting at the incisal or occlusal surfaces. tooth wear is a physiological process and is commonly seen as a normal part of aging. advanced and excessive wear and tooth surface loss can be defined as pathological in nature, requiring intervention by a dental practitioner.
a degree of dentin sensitivity is normal, but pain is not usually experienced in everyday activities like drinking a cooled drink. therefore, although the terms dentin sensitivity and sensitive dentin are used interchangeably to refer to dental hypersensitivity, the latter term is the most accurate.
tooth enamel is one of the four major tissues that make up the tooth in humans and many other animals, including some species of fish. it makes up the normally visible part of the tooth, covering the crown. the other major tissues are dentin, cementum, and dental pulp. it is a very hard, white to off-white, highly mineralised substance that .
toothache, also known as dental pain, is pain in the teeth or their supporting structures, caused by dental diseases or pain referred to the teeth by non-dental diseases. when severe it may impact sleep, eating, and other daily activities. common causes include inflammation of the pulp, usually in response to tooth decay, dental trauma, or other factors, dentin hypersensitivity, apical .
a dentist, also known as a dental surgeon, is a surgeon who specializes in dentistry, the diagnosis, prevention, and treatment of diseases and conditions of the oral cavity.the dentist's supporting team aids in providing oral health services. the dental team includes dental assistants, dental hygienists, dental technicians, and sometimes dental therapists
tooth mobility is the medical term for loose tooth. mobility is graded clinically by applying pressure with the ends of 2 metal instruments e.g. dental mirrors and trying to rock a tooth gently in a bucco-lingual direction towards the tongue and outwards again . using the fingers is not reliable as they are too compressible and will not .
dental care is provided at public and private dental offices. dental services are free for everyone up to 20 years of age. from the age of 20 and upwards there is a fixed state refund which usually is, depending on the dentist's fee and what type of dentistry performed, around 10% - 15% of the total cost.
gigantopithecus is an extinct genus of ape from the early to middle pleistocene of southern china, represented by one species, g. blacki.the first remain of gigantopithecus, a molar tooth, was first identified in a drugstore by anthropologist ralph von koenigswald in 1935, who subsequently described the ape. in 1956, the first mandible was found in liucheng, and numerous more remains have .
a good inkstick is said to be as hard as stone, with a texture like a rhino, and black like lacquer 堅如石，紋如犀，黑如漆 . the grinding surface of a quality inkstick should in reflected light have a sheen that is blueish-purple, black if not so good, and white if bad. the best inksticks make very little noise when grinding due to .
a dental extraction also referred to as tooth extraction, exodontia, exodontics, or informally, tooth pulling is the removal of teeth from the dental alveolus socket in the alveolar bone.extractions are performed for a wide variety of reasons, but most commonly to remove teeth which have become unrestorable through tooth decay, periodontal disease, or dental trauma, especially when they .
dental amalgam is a liquid mercury and metal alloy mixture used in dentistry to fill cavities caused by tooth decay. low-copper amalgam commonly consists of mercury 50% , silver 22–32% , tin 14% , copper 8% and other trace metals.. dental amalgams were first documented in a tang dynasty medical text written by su gong 苏恭 in 659, and appeared in germany in 1528.
clear aligners, also known as clear-aligner treatment, are orthodontic devices that are a transparent, plastic form of dental braces used to adjust teeth. as of 2017, there are more than 27 products available including invisalign and clearcorrect.. clear aligners have undergone changes, making assessment of effectiveness difficult. a 2014 systematic review concluded that published studies were .
colgate is an american brand principally used for oral hygiene products such as toothpastes, toothbrushes, mouthwashes and dental floss.american manufactured by colgate-palmolive, colgate oral hygiene products were first sold by the company in 1873, sixteen years after the death of the founder, william colgate.the company originally sold soap.