J Prosthet Dent 2010;105: 44-50Maj Madhul SinghalMethods of
tooth selectionOerr!"s #io$etric ratio $ethodO$a%illar! central
incisor &idth to #i'!go$atic &idth ratio is 1:1( O)ru#!te
)ooth *ndicator +Dents,l! )ru#!te- .or/- Pa0O*nteralar &idth
$easure$entOcus, ti, location of the $a%illar! canines can #e
esti$ated #! e%tending ,arallel lines fro$ the ala of the nose onto
the la#ial surface of thecontoured occlusion ri$Othis $ethod
underesti$ated the intercanine cus, ti, &idth #! a,,ro%i$atel!
1 $$1O*2oclar 3i2adent lue 4ine 5or$ Selector 6 5acial Meter
+*2oclar 3i2adent- 7$herst- 8.01 Ma2ros/ou9s 5- :itchie ;M<
8asal &idth and incisi2e ,a,illa as guides for the selection
and arrange$ent of $a%illar! anterior teeth< J Prosthet Dent
1=>1;45:5=2-1 2Methods of tooth selectionO?anine-to-canine
distance deter$inationODistance #et&een the $ar/s indicating
the rela%ed corners of the $outhO$easured along the incisal
cur2ature of the contoured occlusion ri$ &ith a @e%i#le
rulerOre,resents an a,,ro,riate &idth for the ( $a%illar!
anterior teethOAighest correlation &ith the &idth of the
natural $a%illar! anterior teeth in ,re2ious studies2-B2 4ie# 8-
Sil2er$an S*- ;ar9n/el 4< 7n anal!sis of soft tissue contours of
the li,s in relation to the $a%illar! cus,ids< J Prosthet Dent
1=(1;1>:2=22;4>:15-22BO7re there an! s,eci9c $easure$ents
$ade on an edentulous cast that could #e useful to clinicians for
selection of ,ro,er $a%illar! anterior denture tooth
&idthH48ull A!,othesisOI)here &ould #e no s,eci9c cast
$easure$ent that &ould #e useful to clinicians to deter$ine
denture tooth si'e $$ anterior to the $iddle of the incisi2e
,a,illa< O)he ,osterior regionO 12 $$ in height- fro$ the record
#ase at the residual ridge crest in the tu#erosit! area to the
occlusal ,lane< O)he occlusion ri$ e%tends ,osteriorl! to a
,oint > $$ fro$ the ,osterior edge of the record #ase- and
slo,es anteriorl! to&ard the occlusal at a 45-degree angle $$
anteriorl!; > to 10 $$ ,osteriorl!-Ota,ers to&ard the
occlusal ,lane to for$ these &idths1Modi9cation of occlusal
ri$sO4a#ial inclination of the ri$ $odi9ed for adeGuate li,
su,,ortO:easona#le e%,osure of the li, $argin; OPreser2ation of the
la#ial ,hiltru$;O adeGuate su,,ort of the nasola#ial folds;O lac/
of either a strained a,,earance due to o2er su,,ort- or colla,sed
a,,earance due to undersu,,ort;OSatisfactor! $o#ilit! of the u,,er
li,>4i, 4engthOShort li,Oedge of u,,er li, at the le2el of crest
of $a%illar! residual ridgeOE, to 4 $$ 2isi#ilit! of occlusal
ri$s6teethO72erage li,Oli, ,rojected 4-5 $$ #elo& the
crestO1-2$$ 2isi#ilit!O4ong li,Oedge of the li, &as ($$ or $ore
#elo& the crestOOcclusal ri$s short of li,s=OMar/ esti$ated
anterior teeth ,osition ,arallel to inter,u,illar! lineOMar/
,osterior teeth ,osition ,arallel to ala-tragus lineO7djust
occlusal ,lane accordingl! and $odif! considering esthetics and
$andi#ular occlusal ri$10OMar/ $idlineOMar/ high s$ile
lineOindicates the $ini$u$ tooth length for good esthetics for
$ediu$ and long li, lengthsOshort li, length -e%,osure of the
gingi2a $a! occur &ith just a half-s$ile- or &ith the li,
at rest in e%tre$e situations- e2en &ith the longest tooth $old
selected11OMar/ lines corres,onding to co$$issures of the li,s at
restO:e,resents canine-to-canine distanceOMeasure &ith @e%i#le
rulerOEsed as control in the stud!12Measure$ents on Ma%illar!
De9niti2e ?astOI)he ( $easure$entsJO10 fro$ the left $id-$a%illar!
$ar/ to the right $id-$a%illar! $ar/- indicated #! the res,ecti2e
residual ridge crest ,oint adjacent to the canine e$inence- +J0O20
fro$ the incisi2e ,a,illa to the left ha$ular notch $ar/- +*0OB0
fro$ the incisi2e ,a,illa to the right ha$ular notch $ar/- +A0O40
fro$ the left ha$ular notch $ar/ to the right ha$ular notch $ar/-
+C0O50 fro$ the incisi2e ,a,illa to the 2i#rating line $ar/<
+;01BMandi#ular de9niti2e castO(0 Distance #et&een centers of
left and right retro$olar ,ads +4014O7ll ( ,ara$etric $easure$ents
$inus canine to canine &idth calculatedOStatistical anal!sis of
$easured diMerences15O?lassi9cation of casts according to denture
teeth &idthO*2oclar 3i2adent Mold ?hart OS$allOMesiodistal
&idth 45
