That remained the state of affairs until the late 1960s when Harald Loe ( at the time a professor at the Royal Dental College in Aarhus, Denmark ) demonstrated that a chlorhexidine compound could prevent the build-up of dental plaque.

Farming of abalone began in the late 1950s and early 1960s in Japan and China.

Collins decided to record it in the late 1960s amid an atmosphere of counterculture introspection ; she was part of an encounter group that ended a contentious meeting by singing " Amazing Grace " as it was the only song to which all the members knew the words.

The last of the Ainu households disappeared in the late 1960s, when Yamanaka Kitaro committed suicide after the death of his wife.

His attitude towards conjectures was that one should not dignify a guess as a conjecture lightly, and in the Taniyama case, the evidence was only there after extensive computational work carried out from the late 1960s.

By the late 1960s he had started to become interested in scientific areas outside of mathematics.

From the late 1940s to the early 1960s, following the creation of the state of Israel, most of these Jews fled their countries of birth and are now mostly concentrated in Israel.

One story is that The Rolling Stones went to stay at Korner's house late one night, in the early 1960s, after a performance.

Although he himself was a blues purist, Korner criticised better-known British blues musicians during the blues boom of the late 1960s for their blind adherence to Chicago blues, as if the music came in no other form.

This practice was particularly popular in the late 1960s.

However, the late 1950s and early 1960s saw the onset of a lasting transformation of the city by the tourist industry.

The local economy is based upon tourism directed to the beaches of the Costa Blanca and particularly the second residence construction boom which started in the 1960s and reinvigorated again by the late 1990s.

From the late 1820s until the mid 1960s, Arapawa Island was a base for whaling in the Sounds.

The region was a major producer of raw opium ( hence the name Afyon ) until the late 1960s when under international pressure, from the USA in particular, the fields were burnt and production ceased.

Remains of the walls of this fort were discovered west of the castle when excavating the foundations for a new post office and telephone exchange building in the late 1960s.

By the late 1960s, the area of LAFTA had a population of 220 million and produced about $ 90 billion of goods and services annually.

Throughout the late 1950s and into the 1960s, the United States and the Soviet Union had been developing a series of missile systems with the ability to shoot down incoming ICBM warheads.

* About 50 people in Vernon, Florida collected insurance claims for loss-of-limb accidents in the late 1950s and early 1960s ; this was more than two-thirds of all such claims in the United States during that time.

He changed his surname from Einstein ( to avoid confusion with the famous physicist ) and began a comedy career that quickly made him a regular on variety and talk shows during the late 1960s and early 1970s.

A standardized form of the Basque language, called Euskara Batua, was developed by the Basque Language Academy in the late 1960s.

In the late 1960s and early 1970s, Thackeray built the party by forming temporary alliances with nearly all of Maharashtra's political parties.

However, in the late 1950s and early 1960s, base-stealing was brought back to prominence primarily by Luis Aparicio and Maury Wills, who broke Cobb's modern single-season record by stealing 104 bases in 1962.

During the late 1960s, the Baseball Players Union became much stronger and conflicts between owners and the players ' union led to major work stoppages in 1972, 1981, and 1994.

The BASIC language was also central to the HP Time-Shared BASIC system in the late 1960s and early 1970s, and the Pick operating system.

Following a brief modeling career in the late 1960s, Berenson became a freelance photographer.

Parker was born in Beaver, Utah, to Maximillian Parker and Ann Campbell Gillies, English and Scottish immigrants, respectively, who came to the Utah Territory in the late 1850s.

* Ian Gillies, late question setter and arbiter of the BBC Radio 4 quiz series Brain of Britain

Gillies wrote 3 patents in the late 1950s.

The privately-owned Tasmanian Hydro-Electric and Metallurgical Co. Ltd. first took a serious interest in generating hydro-electric power from one of Tasmania's highland rivers in late 1909, to provide power for James Gillies ' newly patented electrolytic process for zinc refining, and a " carbide " smelter to be constructed near Snug.

It was not until he moved across the porch that he became aware of them, and then it was too late.

When this second dilemma first became obvious -- during the mid to late '50's -- the United States appeared to have three choices.

In the late 1920s, Heigo became a benshi ( silent film narrator ) for Tokyo theaters showing foreign films, and quickly made a name for himself.

Alaric became the friend and ally of his late opponent, Stilicho.

Her Latin origins and culture however led to creeping resentment from her Greek subjects ( who felt insulted enough by the late Manuel's Western tastes, let alone being ruled by his Western wife ), building up to an explosion of rioting that almost became a full civil war.

The best selling model, the Amiga 500, was introduced in 1987 and became the leading home computer of the late 1980s and early 1990s in much of Western Europe.

This was a comparatively late addition to the AppleTalk protocol suite, done when it became clear that a TCP-style reliable connection-oriented transport was needed.

The baths were destroyed by the Lombards in the 6th century, but they were rebuilt and enlarged when Abano became an autonomous comune in the 12th century and, again, in the late 14th century.

By the late 1980s, the cellular industry's subscriber base had grown into the millions across America and it became necessary to add channels for additional capacity.

On March 3, 1923, in Havana, Cuba, Nin married her first husband, Hugh Parker Guiler ( 1898 – 1985 ), a banker and artist, later known as " Ian Hugo " when he became a maker of experimental films in the late 1940s.

From the early 1940s to the late 1950s, there were scores of Sunday strip-style magazine ads for Cream of Wheat using the Abner characters, and in the 1950s, Fearless Fosdick became a spokesman for Wildroot Cream-Oil hair tonic in a series of daily strip-style print ads.

After the arrival of missionaries in the late 18th century, many Aleuts became Christian by joining the Russian Orthodox Church.

The Haworth Art Gallery in Accrington contains an outstanding collection of Tiffany glassware presented to the town by Joseph Briggs, an Accrington man who had joined Tiffany ’ s in the late 19th century and eventually became art director and assistant manager.

As the use of the Internet became more widespread in the mid to late 1990s, traditional BBSes rapidly faded in popularity.

The language and its variants became widespread on microcomputers in the late 1970s and 1980s, when it was typically a standard feature, and often part of the firmware of the machine.

The political terms of " modern ", " progressive " or " new " Liberalism began to appear in the mid to late 1880s and became increasingly common to denote the tendency in the Liberal Party to favour an increased role for the state as more important than the classical liberal stress on self-help and freedom of choice.

Carbamazepine became widely used to treat bipolar disorder in the late 1980s and early 1990s, but was displaced by sodium valproate in the 1990s.

In the late 20th century, the processing of by-products from the Lacq natural gas field near Pau became important, although Bayonne has had higher-than-average unemployment.

Still a binge drinker, Wills became increasingly unreliable in the late 1940s, causing a rift with Tommy Duncan ( who bore the brunt of audience anger when Wills's binges prevented him from appearing ).

Former Alabama governor and American presidential candidate George Wallace became born again in the late 1970s, which led him to apologize for his earlier segregationist views.

In late 2003, transgenic zebrafish that express green, red, and yellow fluorescent proteins became commercially available in the United States.

Between 1220 and 1230, a Saxon administrator, Eike von Repgow, composed the Sachsenspiegel, which became the supreme law used in parts of Germany as late as 1900.

Although the Portuguese arrived on Cameroon's doorstep in the 16th century, malaria prevented significant European settlement and conquest of the interior until the late 1870s, when large supplies of the malaria suppressant, quinine, became available.