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Author

Year, 

reference

Country

Type 

of 

study

Num-

ber of 

obser-

vers

Observer 

reliability

Popu-

lation

Type of 

lesion and 

prevalence

Number of 

teeth and  

surfaces

Method Com- 

parison 

method

Outcome 

measure

Results  

enamel 

caries

Results  

dentine 

caries

Study quality 

and relevance

Comments

Verdon-


schot et al

1993 [55]*

The 

Nether-


lands, 

Denmark


In vitro 4

No infor-

mation

Extrac-


ted 3 

molars 


from 

soldiers 

aged 

18–20


yrs

Occlusal 

caries, 27/81

(27%) no sign

of caries, 26 

(32%) small

lesions in 

dentine, 28 

(35%) large

lesions in 

inner dentine

81 teeth


BW

Histology

Se, Sp, 

AUC


Se: 61%

Sp: 79%


Low

No reliability 

test

Wenzel 


et al

1991 [36]*

Denmark,

France


In vitro 4

Extrac-


ted 3rd 

molars 


without

visible 


macro-

scopic 


cavitation 

from 


18–20 yr

old men


Occlusal 

caries, 


cariesfree 

or caries 

in enamel 

27/81,  


dentine 

caries 54

81 teeth

dBW & 


BW

Histology

True posi-

tive, false 

positive, 

PPV, NPV,

LR+

CR

Se: 62%


Sp: 85%

PPV: 0.84

NPV: 0.51

DR (RVG, 

Trophy)

Se: 66%


Sp: 83%

PPV: 0.83

NPV: 0.51

Low


No reliability 

test. Not 

representative 

teeth (3rd

molars)

Wenzel 


et al

2002 [56]

Denmark

In vitro 4



Extrac-

ted teeth

Approxi-

mal caries, 

82/363

(23%)


enamel 

caries, 55 

(15%) den-

tine caries

190 teeth  

(146 molars,

31 premolars, 

13 canines)

363 approximal 

surfaces


dBW

Histology

Se, Sp, 

PPV, NPV


All caries

Se: 27%


Sp: 94%

PPV: 0.77

NPV: 0.68

Se: 37%


Sp: 96%

PPV: 0.65

NPV: 0.90

Low


No reliability 

test


White et al

1997 [29]*

USA

In vitro 16



Extrac-

ted teeth

Approxi-

mal caries 

84/320

(26%) outer



1/2 enamel,

76 (24%)

inner 1/2, 80

(25%) outer

1/2 dentine

80 molars,  

80 premolars, 

80 canines,  

80 incisors

320 surfaces

BW

Histology 



(hemisec-

tions)


Se, Sp, 

accuracy. 

PPV and

NPV for


different 

prevalence 

examples

Se: 46%


Sp: 76%

Se: 58%


Sp: 94%

Low


No reliability 

test


Table 4.2.3 continued

151

K A P I T E L   4   •   d I A g n o s T I K



Author

Year, 

reference

Country

Type 

of 

study

Num-

ber of 

obser-

vers

Observer 

reliability

Popu-

lation

Type of 

lesion and 

prevalence

Number of 

teeth and  

surfaces

Method Com- 

parison 

method

Outcome 

measure

Results  

enamel 

caries

Results  

dentine 

caries

Study quality 

and relevance

Comments

Verdon-


schot et al

1993 [55]*

The 

Nether-


lands, 

Denmark


In vitro 4

No infor-

mation

Extrac-


ted 3 

molars 


from 

soldiers 

aged 

18–20


yrs

Occlusal 

caries, 27/81

(27%) no sign

of caries, 26 

(32%) small

lesions in 

dentine, 28 

(35%) large

lesions in 

inner dentine

81 teeth


BW

Histology

Se, Sp, 

AUC


Se: 61%

Sp: 79%


Low

No reliability 

test

Wenzel 


et al

1991 [36]*

Denmark,

France


In vitro 4

Extrac-


ted 3rd 

molars 


without

visible 


macro-

scopic 


cavitation 

from 


18–20 yr

old men


Occlusal 

caries, 


cariesfree 

or caries 

in enamel 

27/81,  


dentine 

caries 54

81 teeth

dBW & 


BW

Histology

True posi-

tive, false 

positive, 

PPV, NPV,

LR+

CR

Se: 62%


Sp: 85%

PPV: 0.84

NPV: 0.51

DR (RVG, 

Trophy)

Se: 66%


Sp: 83%

PPV: 0.83

NPV: 0.51

Low


No reliability 

test. Not 

representative 

teeth (3rd

molars)

Wenzel 


et al

2002 [56]

Denmark

In vitro 4



Extrac-

ted teeth

Approxi-

mal caries, 

82/363

(23%)


enamel 

caries, 55 

(15%) den-

tine caries

190 teeth  

(146 molars,

31 premolars, 

13 canines)

363 approximal 

surfaces


dBW

Histology

Se, Sp, 

PPV, NPV


All caries

Se: 27%


Sp: 94%

PPV: 0.77

NPV: 0.68

Se: 37%


Sp: 96%

PPV: 0.65

NPV: 0.90

Low


No reliability 

test


White et al

1997 [29]*

USA

In vitro 16



Extrac-

ted teeth

Approxi-

mal caries 

84/320

(26%) outer



1/2 enamel,

76 (24%)

inner 1/2, 80

(25%) outer

1/2 dentine

80 molars,  

80 premolars, 

80 canines,  

80 incisors

320 surfaces

BW

Histology 



(hemisec-

tions)


Se, Sp, 

accuracy. 

PPV and

NPV for


different 

prevalence 

examples

Se: 46%


Sp: 76%

Se: 58%


Sp: 94%

Low


No reliability 

test


The table continues on the next page

K A R I E S   –   d I A G N O S T I K ,   R I S K B E d ö M N I N G   O C H   I C K E - I N vA S I v   B E H A N d L I N G

152


Author

Year,  

reference

Country

Type 

of 

study

Num-

ber of 

obser-

vers

Observer 

reliability

Popu-

lation

Type of 

lesion and 

prevalence

Number of 

teeth and  

surfaces

Method Com- 

parison 

method

Outcome 

measure

Results  

enamel 

caries

Results  

dentine  

caries

Study quality 

and relevance

Comments

White et al

1997 [29]*

USA


In vitro 16

Extrac-


ted teeth

Approxi-


mal caries 

84/320


(26%) outer

1/2 enamel,

76 (24%)

inner 1/2, 80

(25%) outer

1/2 dentine

80 molars,  

80 premolars, 

80 canines and 

80 incisors

320 surfaces

dBW


Histology 

(hemisec-

tions)

Se, Sp, 


accuracy

PPV


NPV for

different 

prevalence 

examples


Se: 35%

Sp: 80%


Se: 52%

Sp: 95%


Low

No reliability 

test

White et al



2000 [57]

USA


In vitro 12

No

Extrac-



ted teeth

Approximal 

caries, 19/80

in outer 1/2

enamel, 21 

inner 1/2,  

20 outer  

1/2 dentine

40 premolars 

and 40 molars 

80 surfaces

BW

Histology



Se, Sp, 

accuracy, 

AUC

Se: 40%


Sp: 75%

Se: 61%


Sp: 91%

Low


Wojtowicz

et al


2003 [58]

USA


In vitro 94 stu-

dents 


(40

senior 


dental 

stu-


dents, 

54 


dental 

hygiene 


stu-

dents)


Extrac-

ted, 


human 

premo-


lar and 

molar 


teeth

Approxi-


mal caries, 

10/140


enamel 

caries, 3 to 

DEJ, 26 in

dentine


96 extracted, 

human premo-

lar and molar 

teeth, of 140 

surfaces

BW

Histology, 



scored by 2 

observers 

indepen-

dently, 


consensus 

reached 


when dis-

agreement

Se, Sp

All caries 



(all students

pooled):


Se: 65%

Sp: 81%


Low

Inexperienced

observers 

(students). No

results given 

for enamel 

lesions only. 

Few lesions in

enamel. No 

reliability test



Table 4.2.3 continued

* Study selected because the paper was included in the review by [23].

AUC = Area under the curve; BW = Bitewing radiographs; d1 = Caries in outer half of

enamel; d2 = Caries in inner half of enamel; d3 = Dentine caries; dBW = Digital bitewing

radiographs; DEJ = Dentine-enamel junction; LR = Likelihood ratio; NPV = Negative  

predictive value; PPV = Positive predictive value; ROC = Receiver operating  

characteristic; Se = Sensitivity; Sp = Specificity


153

K A P I T E L   4   •   d I A g n o s T I K



Author

Year,  

reference

Country

Type 

of 

study

Num-

ber of 

obser-

vers

Observer 

reliability

Popu-

lation

Type of 

lesion and 

prevalence

Number of 

teeth and  

surfaces

Method Com- 

parison 

method

Outcome 

measure

Results  

enamel 

caries

Results  

dentine  

caries

Study quality 

and relevance

Comments

White et al

1997 [29]*

USA


In vitro 16

Extrac-


ted teeth

Approxi-


mal caries 

84/320


(26%) outer

1/2 enamel,

76 (24%)

inner 1/2, 80

(25%) outer

1/2 dentine

80 molars,  

80 premolars, 

80 canines and 

80 incisors

320 surfaces

dBW


Histology 

(hemisec-

tions)

Se, Sp, 


accuracy

PPV


NPV for

different 

prevalence 

examples


Se: 35%

Sp: 80%


Se: 52%

Sp: 95%


Low

No reliability 

test

White et al



2000 [57]

USA


In vitro 12

No

Extrac-



ted teeth

Approximal 

caries, 19/80

in outer 1/2

enamel, 21 

inner 1/2,  

20 outer  

1/2 dentine

40 premolars 

and 40 molars 

80 surfaces

BW

Histology



Se, Sp, 

accuracy, 

AUC

Se: 40%


Sp: 75%

Se: 61%


Sp: 91%

Low


Wojtowicz

et al


2003 [58]

USA


In vitro 94 stu-

dents 


(40

senior 


dental 

stu-


dents, 

54 


dental 

hygiene 


stu-

dents)


Extrac-

ted, 


human 

premo-


lar and 

molar 


teeth

Approxi-


mal caries, 

10/140


enamel 

caries, 3 to 

DEJ, 26 in

dentine


96 extracted, 

human premo-

lar and molar 

teeth, of 140 

surfaces

BW

Histology, 



scored by 2 

observers 

indepen-

dently, 


consensus 

reached 


when dis-

agreement

Se, Sp

All caries 



(all students

pooled):


Se: 65%

Sp: 81%


Low

Inexperienced

observers 

(students). No

results given 

for enamel 

lesions only. 

Few lesions in

enamel. No 

reliability test



K A R I E S   –   d I A G N O S T I K ,   R I S K B E d ö M N I N G   O C H   I C K E - I N vA S I v   B E H A N d L I N G

154


Table 4.2.4 Excluded studies in vivo or in vitro, conventional radiography (BW),  

digital radiography (dBW), fibre-optic transillumination.

Author, year,  

reference

Diagnostic 

method

Caries,  

dentition

Main reason  

for exclusion

Abreu et al, 2001 [59]

BW, dBW

Approximal, 



permanent

Outcome measure  

not applicable

Anttonen et al, 2003 [60]

BW

Occlusal, both 



dentitions

Not validated

Ashley et al, 1998 [42]*

BW, dBW, 

ECM, FOTI

Occlusal, 

permanent

Less than 3 examiners

Ástvaldsdóttir et al, 2004 [61]

BW

Occlusal, 



permanent

Biased selection

Bader et al, 2001 [62]

Not adequate

Bader et al, 2002 [63]

Not adequate

Baysan et al, 2004 [64]

ECM


Root,  

permanent

Less than 3 examiners

Burin et al, 2005 [65]

BW

Occlusal, 



permanent

Small sample

Caliskan Yanikoglu et al, 

2000 [66]

Ultrasound

Approximal

Not validated

Choksi et al, 1994 [67]

BW

Secondary



Not validated

Chong et al, 2003 [68]

BW, dBW

Occlusal


Not validated

Côrtes et al, 2000 [69]

BW, FOTI

Occlusal, 

permanent

Small sample

Costa et al, 2002 [70]

BW

Occlusal



Small sample

Dove, 2001 [71]

Not adequate

Erten et al, 2005 [72]

BW, dBW

Approximal, 



permanent

Small sample

Espelid et al, 1986 [73]*

BW

Approximal, 



permanent

Small sample

Espelid et al, 1991 [74]

BW

Secondary



Pooled diagnoses  

for crown and root

Feldens et al, 2003 [75]

BW

Approximal, 



primary

Less than 3 examiners

Firestone et al, 1998 [76]*

BW

Approximal, 



permanent

Not validated

Fyffe et al, 2000 [77]

BW

Approximal, 



permanent

Not validated



The table continues on the next page

155

K A P I T E L   4   •   d I A g n o s T I K



The table continues on the next page

Author, year,  

reference

Diagnostic 

method

Caries,  

dentition

Main reason  

for exclusion

Güngör et al, 2005 [78]

BW

Approximal, 



permanent

Small sample

Haak et al, 2001 [79]

BW, dBW


Approximal, 

permanent

Not validated

Haak et al, 2005 [80]

dBW

Approximal, 



permanent

Outcome measure  

not applicable

Heaven et al, 1992 [81]*

BW

Approximal, 



permanent

Small sample

Heinrich-Weltzien et al, 

2002 [82]

BW

Occlusal, 



permanent

Not validated

Hewlett et al, 1993 [83]

BW

Secondary



Not validated

Hintze et al, 1998 [44]*

BW, FOTI

Approximal, 

permanent

Uncertain validation

Hintze et al, 2002 [84]

BW, dBW


Combinations

Outcome measure  

not applicable

Hintze et al, 2002 [85]

BW, dBW

Combinations



Outcome measure  

not applicable

Huysmans et al, 1998 [86]*

BW, ECM


Occlusal, 

permanent

Less than 3 examiners

Jacobsen et al, 2004 [87]

dBW

Approximal



Biased selection

Janhom et al, 2002 [88]

dBW

Approximal



Outcome measure  

not applicable

Ketley et al, 1993 [89]*

BW

Occlusal, 



primary

Less than 3 examiners

Khan et al, 2005 [90]

BW

Approximal, 



permanent

Outcome measure  

not applicable

Khan et al, 2004 [91]

BW, dBW

Approximal, 



permanent

Outcome measure  

not applicable

Kidd et al, 1994 [92]

BW

Secondary



Less than 3 examiners

Li et al, 2002 [93]

dBW

Approximal



Outcome measure  

not applicable

Ludlow et al, 2001 [94]

BW

Approximal, 



permanent

Outcome measure  

not applicable

Ludlow et al, 1999 [95]

BW, dBW

Approximal



Outcome measure  

not applicable



Table 4.2.4 continued

The table continues on the next page

K A R I E S   –   d I A G N O S T I K ,   R I S K B E d ö M N I N G   O C H   I C K E - I N vA S I v   B E H A N d L I N G

156


Table 4.2.4 continued

Author, year,  

reference

Diagnostic 

method

Caries,  

dentition

Main reason  

for exclusion

Lussi et al, 1995 [96]*

BW, ECM

Occlusal, 



permanent

Small sample, less  

than 3 examiners

Matalon et al, 2003 [97]

BW

Approximal, 



permanent

Small sample

McGuire et al, 1993 [98]

BW

Secondary



Not validated

Mialhe et al, 2003 [99]

BW

Approximal



Less than 3 examiners

Mileman et al, 2002 [16]

BW

Approximal, 



permanent

Reported in another  

publication

Mileman et al, 2003 [100]

BW

Approximal



Not adequate

Møystad et al, 2003 [11]

dBW

Approximal



Outcome measure  

not applicable

Nair et al, 2001 [101]

BW, dBW


Approximal, 

permanent

Small sample

Nytun et al, 1992 [102]*

Combined 

VI and BW

Occlusal, 

permanent

Small sample

Pabla et al, 2003 [103]

dBW

Approximal, 



permanent

Outcome measure  

not applicable

Pitts et al, 1992 [104]*

BW

Approximal



Less than 3 examiners

Pretty et al, 2004 [105]

All available 

methods


Not adequate

Ramesh et al, 2001 [106]

BW, dBW

Combinations



Not validated

Ratledge et al, 2001 [107]

BW

Approximal, 



permanent

Biased selection

Reis et al, 2004 [108]

BW

Occlusal, 



permanent

Small sample

Ricketts et al, 1994 [109]*

BW

Occlusal, 



permanent

Small sample

Ricketts et al, 1996 [110]*

ECM


Occlusal, 

permanent

Small sample

Ricketts et al, 1997 [111]*

ECM

Occlusal, 



permanent

Less than 3 examiners

Ricketts et al, 1997 [112]*

ECM


Occlusal, 

permanent

Less than 3 examiners

Ricketts et al, 1997 [113]*

ECM

Occlusal, 



permanent

Less than 3 examiners



The table continues on the next page

157

K A P I T E L   4   •   d I A g n o s T I K



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