AngleE.H.: Malocclusion of the teeth, 7th ed.Philadelphia: S.S. White Dental Manufact. Co., 1907.
2.
HelmS.: Prevalence of Malocclusion in Relation to Development of the Dentition, Acta Odont Scand28:Suppl. 58, 1970.
3.
TuncayO., and BiggerstaffR.H.: Orthodontic Classification: Mystique or Reality?., Am J Orthodont70: 173–178, 1976.
4.
GravelyJ.F., and JohnsonD.B.: Angle's Classification of Malocclusion: An Assessment of Reliability., Brit J Orthodont1: 79–86, 1974.
5.
BjörkA., KrebsA.A.; and SolowB.: A Method for Epidemiological Registration of Malocclusion, Acta Odont Scand22: 27–41, 1964.
6.
HelmS.: Intraexaminer Reliability of Epidemiologic Registrations of Malocclusion., Acta Odont Scand35: 161–165, 1977.
7.
BaumeL.J.; HorowitzH.S.; SummersC.J.; Backer DirksO.; BrownW.; CarlosJ.P.; CohenL.K.; FreerT.J.; HarvoldE.P.; MoorreesC.; SalzmannJ.A.; SchmudtG., SolowB.; and TaatzH.: A Method for Measuring Occlusal Traits, Int Dent J23: 530–537, 1973.
8.
HelmS.: Recording System for the Danish Child Dental Health Services., Community Dent Oral Epidemiol1: 3–8, 1973.
9.
MasslerM., and FrankelJ.M.: Prevalence of Malocclusion in Children Aged 14 to 18 Years., Am J Orthodont37: 751–768, 1951.
10.
SalzmannJ.A.: Treatment Priority Index of Malocclusion., Int Dent J20: 618–632, 1970.
11.
PoultonD.R., and AaronsonS.A.: The Relationship Between Occlusion and Periodontal Status., Am J Orthodont47: 690–699, 1961.
12.
Van KirkL.E., and PennellE.H.: Assessment of Malocclusion in Population Groups., Am J Orthodont45: 752–758, 1959.
13.
DrakerH.L.: Handicapping Labiolingual Deviations: A Proposed Index for Public Health Purposes., Am J Orthodont46: 295–305, 1960.
14.
HeidebornM.: Der “Entstellende-Anomalie”-Index, ein Masstab zur qualitativen Erfassung von Dysgnathien auf der Grundlage der durch sie hervogerufenen Enstellung., Fortschr Kieferorthop30: 361–374, 1969.
15.
HowittJ.W.; StrickerG.; and HendersonR.: Eastman Esthetic Index., N Y State Dent J33: 215–220, 1967.
16.
GraingerR.M.: Orthodontic Treatment Priority Index, Vital and Health Statistics, National Center for Health Statistics, Series 2, Number 25, U.S. Dept. of Health, Education and Welfare, Washington, D.C., 1967.
17.
SummersC.J.: The Occlusal Index: A System for Identifying and Scoring Occlusal Disorders., Am J Orthodont59: 552–567, 1971.
18.
AltemusL.A.: Frequency of the Incidence of Malocclusion in American Negro Children Aged Twelve to Sixteen, Angle Orthodont29: 189–200, 1959.
19.
SzwejdaL.F.: The HLD Index by Race and Ingestion of Fluoridated Water., J Pub Health Dent25: 2–6, 1965.
20.
BilimoriaK.F.: Malocclusion—Its Role in the Causation of Periodontal Disease., J All-India Dent Assoc35: 293–300, 314, 1963.
21.
BeagrieG.S., and JamesG.A.: The Association of Posterior Tooth Irregularity and Periodontal Disease., Brit Dent J113: 239–243, 1962.
22.
MasslerM., and SavaraB.S.: Relation of Gingivitis to Dental Caries and Malocclusion in Children 14 to 17 Years of Age., J Periodontal22: 87–96, 1951.
23.
FreerT.J.: Assessment of Occlusal Status. The Matched-Pair Similarity Technic., Int Dent J22: 412–422, 1972.
24.
HelmS.; KreiborgS.; BarleboJ.; CaspersenI.; EriksenJ.H.; HansenW.; HanusardottierB.; MunckC.; PerregaardJ.; PrydsöU.; ReumertC.; and SpedtsbergH.: Estimates of Orthodontic Treatment Need in Danish Schoolchildren., Community Dent Oral Epidemiol3: 136–142, 1975.
25.
BowdenD.E.J., and DaviesA.P.: Inter- and Intraexaminer Variability in Assessment of Orthodontic Treatment Need., Community Dent Oral Epidemiol3: 198–200, 1975.
26.
HaugejordenO., and SlackG.L.: A Study of Intra-examiner Error Associated with Recording of Radiographic Caries at Different Diagnostic Levels., Acta Odont Scand33: 169–181, 1975.
27.
CarlosJ.P.: Evaluation of Indices of Malocclusion., Int Dent J20: 606–617, 1970.
HojemJ.: Kjeveortopedisk tannhelsetjeneste i Norge i dag, Norsk Tannlägeforen Tid85: 455–462, 1975.
30.
KellyJ.E.; SanchezM.; and Van KirkL.E.: An Assessment of the Occlusion of the Teeth of Children, U.S. Dept. of Health, Education and Welfare, DHEW Publication No. (HRA) 74-1612, National Center for Health Statistics, Rockville, Md.1973.
31.
Committee on Handicapping Orthodontic Conditions, Seriously Handicapping Orthodontic Conditions, Washington, D.C.: National Academy of Sciences, 1976.
32.
HelmS.: Unpublished data.
33.
American Association of Orthodontists: The American Association of Orthodontists Study of the Availability of Orthodontic Services, Am J Orthodont68: 326–338, 1975.
34.
Ministry of the Interior: Lov nr. 217 af 19. maj 1971 om börnetandpleje.
35.
National Health Service of Denmark: Sundhedsstyrelsens vejledning af 28. januar 1972 om omfanget af og kravene til börnetandplejen.
36.
SalzmannJ.A.: The Threat of “Social Orthodontics” in Prepayment Programs., Am J Orthodont55: 302–303, 1969.
37.
HotzR.: Orthodontics in Socialized Dentistry, Europ Orthodont Soc Trans1975: 251–254.