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Posts Tagged ‘Teeth’

Toothworms [en]

fredag den 11. oktober 2013

Toothworms

An 18th century hand-illustrated page from an Ottoman Turk dental book showing a molar infected with toothworms. As early as Babylonian times and lasting well into the eighteenth century, it was thought that a toothache was caused by worms. (The theory was disproved by Jacob Christian Schaffer in 1757.) These worms were depicted in art as dwelling with the demons of Hell and feeding upon the sinners. In a cavity on one side of the bisected tooth, Lucifer watches as two worms devour and entrap their victims. In the other half of the tooth, demons lord over a collection of human skulls.

Via Moshita

Leprogenic odontodysplasia [da]

tirsdag den 29. januar 2013

New Open Access Article: Vítor M.J. Matos & Ana Luísa Santos: Leprogenic odontodysplasia: new evidence from the St. Jørgen’s medieval leprosarium cemetery (Odense, Denmark)

Leprogenic odontodysplasia
Leprogenic odontodysplasia

The old cemetary belonging to the leprosy hospital here in Odense was excavated between 1980 and 1981. It was in use from 1270 to 1560. The 1544 skeletons from the cemetary are stored at our anthropological department (ADBOU) at the University of Southern Denmark. A wonderful collection of approx. 15,000 primarily medieval skeletons.

You can see pictures of a mother and her unborn child, also from St. Jørgen’s leprosarium in Odense here.

Street dentists in India, China and Pakistan [da]

lørdag den 24. november 2012

Street dentistry is the unlicensed practice of dentistry in the street, usually for people who are unable to afford licensed dental care.

In India, street services are plentiful, with dentists operating alongside other street services, such as apothecaries, repairmen, and barbers. These practitioners charge far less than licensed dentists, often charging as little as 125 rupees for a procedure such as a bridge—which, at a licensed dentist, could be as expensive as 10,000 rupees. Many learn the trade from their parents.

In India, Chapter V, Section 49 of the Dentist Act of 1948 requires dentists, dental mechanics, and dental hygienists to be licensed, making street dentistry illegal, though street dentists continue to practice.

Street Dentists of India [da]

onsdag den 7. november 2012

“I don’t find this job difficult at all because I’ve done a lot of technical work - I even repaired bicycles. I know how to work a file, pliers and all possible tools.”

- Pushkar Sing a.k.a. “Doc-Junior”

Age estimation from teeth [da]

lørdag den 3. november 2012

Eruption of deciduous (baby or milk) teeth and permanent (adult) teeth occurs at fairly regular intervals during the subadult years of development (see the figure above, deciduous teeth are shaded). Therefore, age estimation of subadults based dental eruption is quite accurate.

Click image to enlarge

While tooth wear and permanent tooth loss can occur in subadults, these degenerative changes are usually associated with adults. Loss of permanent teeth and accompanying bone resorption of the alveolar bone of the maxilla and/or mandible are often associated with old age. Tooth wear or dental attrition most often occurs in adults, but the age of onset depends on diet and other environmental factors. This process leads to loss of outer white tooth enamel and exposure of the yellowish dentine of the pulp cavity, especially on the cusps of the teeth. The older an individual is, the more dentine is exposed due to tooth wear.

Image is scanned from Tim D. White, Michael T. Black & Pieter A. Folkens: Human Osteology, Academic Press, 3 ed. (2011)

Human Tooth [da]

lørdag den 3. november 2012

This is an image of a piece of dentine acquired using a scanning electron microscope. It shows the dentinal tubules viewed after demineralization using etching with 37% phosphoric acid for 15 seconds and 10% sodium hypochlorite for 1 minute. The colors were obtained by mixing the signals of secondary and backscattered electrons. The mixing is performed using the software FEI Company.

Courtesy of FRANCISCO RANGEL

This photo was taken on March 29, 2010 in Hillsboro, Oregon, US.

Image Details
Instrument used: Quanta Family
Vacuum: 9.4 e-7 mbar
Voltage: 10 kV
Spot: 3.0
Working Distance: 11.0
Detector: MIX: SE (channel 1) and BSE (channel 2)

[da]

fredag den 2. november 2012

Linear enamel hypoplasia in permanment adult dentition

Poor health and malnutrition can disrupt enamel formation and leave horizontal bands or grooves on the crowns of teeth which do not grow out and stay there permanently.

Source: Inside the Museum of London / Into the Groove

[da]

lørdag den 27. oktober 2012

A great photo of a street dentist with all his equipment in Narayanganj, Bangladesh, 2011.

Street dentists practice dentistry on people who can’t afford to go to the dental clinics. The circular pile of teeth is there as a proof of his kills/success/experience.

Archaeological News: Mummy with Mouthful of Cavities Discovered [en]

onsdag den 10. oktober 2012

Archaeological News: Mummy with Mouthful of Cavities Discovered

Dental treatment in Medieval England [da]

torsdag den 4. oktober 2012
A dentist with silver forceps and a necklace of large teeth, extracting the tooth of a seated man. England – London, 1360-1375
A dentist with silver forceps and a necklace of large teeth, extracting the tooth of a seated man. England – London, 1360-1375

Trevor Anderson: "Dental treatment in Medieval England"
British Dental Journal, No. 197 (2004)

Abstract: Medieval (12th–14th century) medical literature suggests that care of the teeth was largely limited to non-invasive treatment. Cures, mainly for toothache and ‘tooth worm’ were based on herbal remedies, charms and amulets. Bloodletting was advised for certain types of toothache. There is also documentary evidence for powders to clean teeth and attempts at filling carious cavities. Surgical intervention for oral cancer and facial fracture is also known. Post-operative infection and abscess formation can be identified and early forms of false teeth are mentioned.

  • An introduction to Medieval documents relating to dental problems is given.
  • Medieval herbal remedies for dental problems are outlined.
  • The earliest evidence for filling material is provided.
  • The earliest evidence for the manufacture of false teeth is presented.

Read article here or here

via @Medievalists