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24 .
The division of the number of permanent fillings—5,024 into
the respective material used is as follows : 4,814 permanent posterior
teeth were restored with Silver Amalgam and 210 Anterior permanent
teeth were restored with Porcelain Cement. The number
of permanent teeth filled for the year was greater by 1,274 to that
obtained for the preceding year.
The number of temporary teeth filled showed an increase also
to that of the previous year. The number actually filled reached
381 against 26.
The figures for extraction are higher in both series of Dentition.
The larger number of children treated is accountable for this
increase.
The number of permanent teeth removed for extreme forms
of decay amounted to 1,191, this figure being greater by 385 over
the preceding year ; also 155 sound teeth were removed for regulation
purposes, making a total of 1,346 permanent extractions.
The number of temporary teeth removed amounted to 6.525.
This figure also is greater by 354 over that of the preceding year.
The ratio of permanent fillings to permanent extractions of
decayed teeth is 4.1 approximately. In the coming year the
ratio between these figures will be greater, as the acceptance rate
is increasing. .
The above figures are for work carried out in the most important
branch of school dentistry, namely, fillings and extractions. There
are, however, other forms of treatment, and the next in importance
is that carried out on the regulation of abnormal and misplaced
teeth and irregular relationship of the jaws. The number of new
cases fitted with Orthodontic Appliances for this form of work
totalled 183. The children who were in the greatest need of treatment
were supplied with the appliances. The number of children
who had Orthodontic treatment completed during the year totalled
25. The number of visits for both old and new cases attending for
adjustments totalled 1,708. The increase in the number of appliances
fitted this year to that of the previous year totalled 128, an increase
of over 300%.
Other minor forms of treatment were also carried out. For
instance, 185 children had their teeth scaled and polished. Forty
children had various forms of Gum Infections. For this number
of children 320 visits were required to cure the condition. The
number of temporary teeth treated with Silver Nitrate totalled
1,000 ; and this figure, added to the temporary teeth that had fillings
inserted in them, make a total of 1,381 teeth saved. Dressings of
Oxide were also inserted in painful temporary and permanent teeth
the number of these dressings totalled 527 separate teeth.