| Show Modern Dentists W ork With th Remarkable Skill WAS PAS an upper front tooth THIS that had ono once been filled tilled with gold golli but teeth decoy decay having wet vet In around that filling It had become necessary to 10 Jill All ll the tooth again This time Ume the t sold said he thought he would 1111 It with porcu porco porcelain lain All th the processes of or making a porcelain Inlay are Interesting hay Hav Having U hayIng ing drilled drill the cavity In the tooth to toIto Ito It required r depth and the den ilen list lIet next proceeds proceed proc s to make a matrix or meld mold of ot It U In KOld gold toll foil which he Is Ic I enabled to do without hout breaking this delicate material by the use of ot a bit bitof bitof bitof of sponge between It and the crowd lug liiK tool So he crowds crowd the Old gold foil toll down around within It everywhere to At tu Into the cavity perfectly and nd get iel getting I ting the depth sell nil around the th edgo go goof of the mold so 0 exactly that the Inlay I to I be made In III h It when set et Into place plod will not only At lit pert itly in the Uhl mv cavIt Ity It but bill fit nt Into It with Its Ita Itt origan eA s Hush flueh all round rund with the surrounding eur ur Mc of ot the IhO tooth The mold thus Ihu mu mode of oC th the cavity lu iii I the tooth may ma lo lok k like the tin of tiny gold cups or r It may om have haye some Irregular shape hape according to the th shape of the cAvity canty but whatever It Its shape Ilta 8 tills this mold of It gold would crush It and It seems Mem lode ti u Lie IU If It Ifa Ita Ifa a breath would blow It away As a probably probably probably ably It would and amid you may mar lIta wonder wondel how a solid piece of ot porcelain can 11 e eel ei er ur er be formed In a mold so eo frail trail ant and but 11 It In is I all really relI vel very elm m pie as you OU will see me MAKINO THE dOLD MOLD Now Sow the dl tithe a small me tall talk holder hold about the sl lea and shape of a vr VI vry small clam shell hell he 1 till nil with d mixed with water wier and on top of tills this th yield yielding W ing big material handling It gently with witha a pair of ot pliers ll r he hf let eat lets the th delicate little gold mold with It ItJI U rioted dosed Io end down n resting Un so 10 on thu tho surface of th the powered asbestos This 1111 I l older Ider luv lua II a lip on one Ida aide dd of lla llad Ill ed edg d by II which It II can be lifted with witha a pair of pliers male made for th the purpose and serving m thus a as a handle for tor It Lifting the Ute little saucer UI now by this thi handle the operator rubs ruba on the handle very gently u as A oi 01 one e might draw a fiddle Addle bow very vary gently back bak and forth t h on the strings of or a Addle u It lied Iud pencil penell I might ht do du for this but bUI he h U Is A likely to t use u c atm m i r tool with a chased oh or fir engraved handle hand whose wh irregularities will heighten th the thA effect 18 sad and robbing bbl gently with this tb on Oft I I I I I i i I I the tho handle of the holder hold r he Ih h eaten I tu to It U an and 1 to Its III contents content and to the little gold mold on top to ous ou gentle genUe vibrations which which slight alight an as they the are still cause the mold grad to settle and embed in n the tunic mass In the holder and this thin without In the IIII he t changing Its III shape These Theo vibrations ore are con on until the mold has nettled to the required depth and then the tho wa ua tel ter Is In evaporated from tho the beatos and there you have havo the tho little gold Rold mold firmly embedded embed led In practically solid material and ready for Cor use Ue The Inlay will be bo made In III the mold from a Q porcelain powder Porcelain n powders for far dental use are made Ky by t the manufacturers manufacturer of ot dental supplies In endless variety of or shades siMes so IO that It It easily possible to get fret a I powder whose whole finished product will match math any tooth looth The Tho dentist has han a great Ireat as aa of teeth made from porre lain powders these there the all named or nr numbered and he matches up your tooth with one of ot these theae and use UlM for forthe forthe the Inlay the powder of or tho the corres corree corresponding number 1 TUB TIIE I LAT With the little gold old mold all aJl ready read the operator now mixes mix a sufficient quantity of the porcelain powder with alcohol to give him the material In Ina Ina ina a plastic form torm while at the same name time the alcohol will evaporate quickly He Ifs n Wets al also aillo o the In the mold holder helder to keep that from absorbing the alcohol In the porcelain powder And now with Ills hits hi porcelain In bt workable form to Im he tills 1111 the mould with It to 10 make mke there the shape that Is fa I to tobe toI tobe be wt set I Into lalo the tooth looth and then he pro proceed used to 10 fashion In the plastic material IU ItJI outward part This may be slump simp ly Iy I a lightly rounded surface for tor nn an inlay that Ut I ii Ie to go IlO into th the flatter nailer part art of ot a tooth looth or the Ute inlay ouy include an arm edge age or corner of A tooth or both bothI I but bill ver the outward part stay ma I be the operator eo so molds mold and anti fashions fashion It that It will continue and complete com pie naturally the contour of or the tile tooth looth Into In Into Into to which the Inlay U I to lu be l I net act t With the modeling thus finished tile th Inlay Is I ready for tor the Anal final proc and now new with tho the holder mold and all ull l I It I Is put Ul Into Inlo a Un tin tiny oven out nut ut of which after a suitable time It I Is taken belted baked Into a solid bit bli of por pur the Ih Infer completed It Is t set eel ti 1 t late a with and ancl MI w perfect Is II porcelain now flOW Inner dance that Ihal ft surer fit upon the he close In Inspection It II mi uia be impossible to tell tall tellIn In an att Inlaid tooth where the tau natural tooth ends nd and where her the lnla inlay begins be begins gins n a nice n ot i In 11 modern den dentistry Washington Post Poet |
