

@mastersthesis {6318,
	title = {The estimation of the needs for periodontal treatment in adult {Hong} {Kong} {Chinese} using the community periodontal index of treatment needs ({CPITN}) and an evaluation of a minimal periodontal treatment programme ({BL})},
	year = {1997},
	note = {U531512},
	school = {University of London, University College London (United Kingdom)},
	type = {phdPh.{D}.},
	address = {Ann Arbor},
	abstract = {The purpose of this investigation was to: (1) assess the time required to provide periodontal treatment in a group of adult Hong Kong Chinese; (2) examine if a relationship exists between CPITN scores and treatment times; and (3) evaluate the effects of oral hygiene instruction in the absence of scaling.{\textless}P{\textgreater}Based upon CPITN treatment need indications, a sub-sample of the 668 subjects aged 35-44 years examined during the 1984 Hong Kong Survey of Adult Oral Health was defined comprising all 104 Treatment Need (TN) "3" subjects and 100 randomly selected (TN) "2" subjects. During the first six months of the study, a split-mouth approach was used to assess the outcome of oral hygiene alone as against oral hygiene and scaling. Thereafter, routine periodontal treatment was undertaken and monitored for a total period 15 months. Treatment times were assessed using the methods of time study and activity sampling while clinical outcomes were assessed on probing depth, calculus, and bleeding on probing.{\textless}P{\textgreater}In summary, the principal findings of this study are that:{\textless}P{\textgreater}{\textless}IMG WIDTH=7 HEIGHT=7 SRC="/inline/symbol\_183.gif"{\textgreater} For adult Hong Kong Chinese treated under the conditions of this study, the mean initial oral hygiene time was somewhat less than the time estimates provided in TRS 621 (WHO, 1978);{\textless}P{\textgreater}{\textless}IMG WIDTH=7 HEIGHT=7 SRC="/inline/symbol\_183.gif"{\textgreater} The mean time for initial scaling of sextants at baseline was within the range suggested by TRS 621;{\textless}P{\textgreater}{\textless}IMG WIDTH=7 HEIGHT=7 SRC="/inline/symbol\_183.gif"{\textgreater} For subsequent maintenance phases, the mean oral hygiene time per subject and the mean scaling time sextant were greater than the TRS 621 estimates;{\textless}P{\textgreater}{\textless}IMG WIDTH=7 HEIGHT=7 SRC="/inline/symbol\_183.gif"{\textgreater} Deferment of initial scaling for a period of six-months after oral hygiene instruction reduced scaling time by one-half thereby providing a basis for the development of more time efficient methods for the provision of periodontal treatment;{\textless}P{\textgreater}{\textless}IMG WIDTH=7 HEIGHT=7 SRC="/inline/symbol\_183.gif"{\textgreater} The CPITN score was not useful as an indicator of the time required for individual components of treatment except for initial scaling time at baseline;{\textless}P{\textgreater}{\textless}IMG WIDTH=7 HEIGHT=7 SRC="/inline/symbol\_183.gif"{\textgreater} Activity sampling revealed that over half of hygienist time was unproductive;{\textless}P{\textgreater}{\textless}IMG WIDTH=7 HEIGHT=7 SRC="/inline/symbol\_183.gif"{\textgreater} Improvements in periodontal health can take place following oral hygiene instruction in the absence of scaling;{\textless}P{\textgreater}{\textless}IMG WIDTH=7 HEIGHT=7 SRC="/inline/symbol\_183.gif"{\textgreater} Scaling enhances the improvements in periodontal health achieved by oral hygiene alone;{\textless}P{\textgreater}{\textless}IMG WIDTH=7 HEIGHT=7 SRC="/inline/symbol\_183.gif"{\textgreater} the CPITN has deficiencies due to its hierarchical nature when used for the monitoring of periodontal treatment outcomes.},
	keywords = {(UMI)AAIU531512, 0567:Dentistry, Bibliographies, Dentistry, Health and environmental sciences, Psychology{\textendash}Abstracting, Statistics},
	url = {http://search.proquest.com/docview/900271015?accountid=14270},
	author = {Holmgren, C J}
}
