%PDF-1.3 % 2 0 obj << /Length 7335 >> stream /Cs6 CS 0 0 0 SCN 0 J 0 j 0.48 w 10 M []0 d /GS1 gs 1 i 48.02 75.04 m 546.98 75.04 l S BT /TT1 1 Tf 10 0 0 10 48.02 64 Tm /Cs6 cs 0 0 0 scn 0.0062 Tc 0 Tw (40)Tj /TT2 1 Tf 8 0 0 8 60.5 64 Tm 0.0396 Tc [( )28.1( )]TJ /TT3 1 Tf 1.635 0 TD 0.0152 Tc 0.0292 Tw (Revista Odonto Cincia )Tj /TT2 1 Tf 11.22 0 TD 0.0144 Tc 0.0287 Tw [( Fac. Odonto/PUCRS, v)74.4(.)1( 20, n. 47, jan./mar)44.4(. 2005)]TJ /TT3 1 Tf -14.415 92.34 TD 0.0152 Tc 0.0385 Tw (Anlise da presena do canal cavo-inter-radicular ...)Tj /TT2 1 Tf 46.545 0 TD 0.0156 Tc 0.0175 Tw (Cunha FS, Machado G, Neuvald L)Tj ET 1 1 1 scn 48.05 811.85 498.9 -14.15 re f* 1.92 w 274.7 809.8 m 320.3 809.8 l S 0.36 w 274.7 806.98 m 320.3 806.98 l S BT /TT4 1 Tf 16 0 0 16 274.94 790.6 Tm 0 0 0 scn 0 Tc 0 Tw (A)Tj -0.03 0 TD (A)Tj 0.03 0.03 TD (A)Tj -0.03 0 TD (A)Tj 0.015 -0.015 TD (A)Tj 12.8 0 0 12.8 284.612 790.648 Tm (R)Tj -0.03 0 TD (R)Tj 0.03 0.03 TD (R)Tj -0.03 0 TD (R)Tj 0.015 -0.015 TD (R)Tj 0.5869 -0.015 TD -0.0001 Tc (TIGO)Tj -0.03 0 TD (TIGO)Tj 0.03 0.03 TD (TIGO)Tj -0.03 0 TD (TIGO)Tj 0.015 -0.015 TD (TIGO)Tj /TT5 1 Tf 22 0 0 22 62.78 740.92 Tm -0.0179 Tc -0.0073 Tw [(ANLISE DA PRESENA DO CANAL CAVO-INTER)36.6(-RADICULAR)]TJ 4.68 -1.0909 TD -0.0006 Tw (EM MOLARES ESTUDO )Tj /TT6 1 Tf 8.9455 0 TD -0.0022 Tw (IN VITRO)Tj 14 0 0 14 136.1 690.4 Tm -0.0053 Tc 0.0094 Tw [(IN VITRO)29( ANAL)71.8(YSIS OF ACES)20.4(S)12.7(ORY FORAMINA IN MOL)-39.6(AR TEETH)]TJ ET 0.24 w 218.18 676.72 m 376.82 676.72 l S BT /TT7 1 Tf 12.1 0 0 11 214.46 648.52 Tm 0.0216 Tc -0.0278 Tw [(Cunha)21.6(, F)11.7(ernanda Silveira da*)]TJ 1.5471 -1.0909 TD 0.021 Tc -0.0288 Tw [(Machado)40.8(, Geovana**)]TJ ET 0.48 w 90.5 606.64 m 504.5 606.64 l S 1.68 w 90.5 604.36 m 504.5 604.36 l S 0.48 w 90.5 602.08 m 504.5 602.08 l S BT 12.1 0 0 11 247.46 624.52 Tm [(Neuvald)11(, Lilian***)]TJ /TT8 1 Tf 9 0 0 9 276.5 565.24 Tm 0.0123 Tc 0 Tw (RESUMO)Tj /TT1 1 Tf -18.7733 -1.9067 TD 0.015 Tc -0.0278 Tw [(Evidncias significativas sugerem a inter)28.3(-relao existente entre a regio de furca de dentes)]TJ -1.8933 -1.2267 TD 0.0104 Tw [(multirradiculados com o desenvolvimento de leses endo)-51.8(-periodontais, principalmente, quan-)]TJ T* 0.0148 Tc 0.0286 Tw [(do da presena do canal cavo)-38.5(-inter)28.1(-radicular)108.1(. Com o objetivo de compreender os mecanismos)]TJ 0 -1.2133 TD 0.0145 Tc -0.0421 Tw (envolvidos na etiopatogenia de tais doenas periodontais, assim como propiciar o diagnstico e)Tj 0 -1.2267 TD 0.0763 Tw [(o tratamento precoces, buscou-)-52.2(se melhor caracterizar essa regio dando nfase morfologia)]TJ T* 0.0208 Tc 0.1529 Tw [(do assoalho da cmara pulpar)114.1(. P)47.5(ara este estudo foram selecionados 42 molares humanos)]TJ 0 -1.2133 TD 0.0146 Tc -0.0158 Tw (extrados, sendo 21 superiores e 21 inferiores. Aps realizadas as aberturas coronrias e loca-)Tj 0 -1.2267 TD 0.0944 Tw (lizadas as entradas dos canais radiculares, os dentes tiveram parte das pores coronria e)Tj T* 0.0208 Tc 0.2791 Tw (radicular cortada perpendicularmente ao longo do seu eixo, com o auxlio de disco de)Tj 0 -1.2133 TD 0.0148 Tc -0.0185 Tw (carburundum. Depois de uma criteriosa limpeza dos espcimes, esses foram secos em cmara)Tj 0 -1.2267 TD 0.0146 Tc 0.0025 Tw [(de ponto crtico, sendo, a seguir)107.9(, preparados para anlise em microscpio eletrnico de varre)-38.7(-)]TJ T* 0.0101 Tc -0.0611 Tw (dura \(Philips)Tj 6.5 0 0 6.5 146.66 430 Tm 0 Tc 0 Tw ()Tj 9 0 0 9 152.06 427 Tm 0.0101 Tc -0.061 Tw [(, modelo XL30, Holanda\). Os dados foram analisados atravs do T)90.1(este U de Mann-)]TJ -6.84 -1.2133 TD 0.0148 Tc -0.0188 Tw [(Whitney e do teste Qui-)-51.9(quadrado. Com base nos resultados obtidos e de acordo com a literatu-)]TJ 0 -1.2267 TD -0.0389 Tw [(ra pertinente, pde)-51.8(-)-29.3(se verificar que: 1. o dimetro e o nmero de tbulos dentinrios encontra-)]TJ T* 0.0141 Tc 0.0555 Tw (dos por mm)Tj 5.9 0 0 5.9 145.22 396.76 Tm 0 Tc 0 Tw (2)Tj 9 0 0 9 148.94 394 Tm 0.0145 Tc 0.0555 Tw [( assim como a presena de foraminas no assoalho da cmara pulpar sugerem a)]TJ -6.4933 -1.2133 TD 0.0148 Tc 0.0188 Tw (permeabilidade dessa regio; 2. o dimetro maior de algumas foraminas identifica a presena)Tj 0 -1.2267 TD 0.0277 Tw [(do canal cavo)-38.4(-inter)41.6(-radicular)94.9(.)]TJ /TT8 1 Tf 0 -1.6133 TD 0.014 Tc 0 Tw (UNITERMOS:)Tj /TT1 1 Tf 6.9067 0 TD 0.0147 Tc 0.0039 Tw ( cmara pulpar; microscopia eletrnica de varredura; permeabilidade.)Tj /TT9 1 Tf 13.4133 -2.8533 TD 0.0139 Tc 0 Tw (SUMMARY)Tj /TT10 1 Tf -18.4267 -1.92 TD 0.0142 Tc -0.0192 Tw (Mounting evidence has suggested a relationship between the existing furcation region in)Tj -1.8933 -1.2267 TD 0.0032 Tc -0.0611 Tw (multirradicular teeth and the development of endoperiodontal lesions. This effect is particulary)Tj 0 -1.2133 TD 0.0141 Tc -0.0055 Tw [(pronounced when accessory foramina are present. In order to improve our understanding of)]TJ 0 -1.2267 TD 0.0782 Tw (the mechanisms involved in the etiopathogeny of periodontal disease, as well as facilitate)Tj T* 0.0137 Tc -0.0487 Tw (early diagnosis and treatment, an attempt was made to characterize this region with special)Tj 0 -1.2133 TD 0.014 Tc -0.0434 Tw [(attention to the morphology of the pulp chamber floor)94(. F)107.3(orty-two extracted human molars \(21)]TJ 0 -1.2267 TD 0.0139 Tc 0.14 Tw [(maxillary and 21 mandibular molars\) were used in this study)13.9(. After the crows had been)]TJ T* 0.014 Tc -0.0504 Tw (resected and the root canals openings identified, part of the coronal and radicular sections of)Tj 0 -1.2133 TD 0.0199 Tc 0.2379 Tw (the teeth were split longitudinally their axes with carborundum disc. After meticulous)Tj 0 -1.2267 TD 0.0137 Tc -0.0611 Tw (cleansing, the teeth were dried in a critical point dry chamber and then prepared for analysis)Tj T* 0.013 Tc 0.0028 Tw (in a Philips)Tj 6.5 0 0 6.5 141.14 207.52 Tm 0 Tc 0 Tw ()Tj 9 0 0 9 146.66 204.52 Tm 0.014 Tc 0.0042 Tw [( XL)-12.7(-30, Holland, SEM. The collected data were submitted to statistical analysis)]TJ -6.24 -1.2133 TD 0.0142 Tc -0.0157 Tw [(by Mann-)54.2(Whitney T)94.2(est and Qui-)-52.5(square T)94.2(est. The results obtained and a revision of literature)]TJ 0 -1.2267 TD 0.0706 Tw (shows that: 1.the number and diameter of dentinal tubules per mm)Tj 5.9 0 0 5.9 401.06 185.2 Tm 0 Tc 0 Tw (2)Tj 9 0 0 9 404.66 182.56 Tm 0.0145 Tc 0.0712 Tw [( found, as well as the)]TJ -34.9067 -1.2267 TD 0.014 Tc -0.0162 Tw (presence of foramina on the pulp chamber floor are indicators of permeability in this region;)Tj 0 -1.2133 TD 0.0102 Tw (2. the wider diameter of some foramina indicate the presence of accessory foramina.)Tj /TT9 1 Tf 0 -1.6267 TD 0.0143 Tc 0 Tw (UNITERMS:)Tj /TT10 1 Tf 6.0667 0 TD 0.0138 Tc 0.0083 Tw [( permeability; pulp chamber; scanning electronic microscopy)13.8(.)]TJ ET 48.02 120.04 m 93.38 120.04 l S BT /TT1 1 Tf 8 0 0 8 58.1 110.32 Tm 0.0167 Tc -0.0072 Tw [(*)-353.3(Mestranda em Clnica Odontolgica, nfase em Radiologia, UFRGS.)]TJ -0.525 -1.125 TD -0.0107 Tw [(*)-33.4(*)-328.4(Doutora em P)46.6(olmeros pela UFRGS. Responsvel tcnica pelo Laboratrio de Microscopia e Microanlise da UFRGS.)]TJ -0.525 -1.125 TD 0.0162 Tc 0.0041 Tw [(*)-21.3(*)-21.3(*)-328.8(Doutora em Endodontia pela FOBUSP)91.2(-Bauru. Coordenadora do Curso de Especializao em Endodontia ABO/RS.)]TJ ET endstream endobj 3 0 obj << /ProcSet [/PDF /Text ] /Font << /TT1 4 0 R /TT2 5 0 R /TT3 6 0 R /TT4 7 0 R /TT5 8 0 R /TT6 9 0 R /TT7 10 0 R /TT8 11 0 R /TT9 12 0 R /TT10 13 0 R >> /ExtGState << /GS1 14 0 R >> /ColorSpace << /Cs6 15 0 R >> >> endobj 15 0 obj [/ICCBased 17 0 R] endobj 17 0 obj << /N 3 /Alternate /DeviceRGB /Length 2572 /Filter /FlateDecode >> stream HyTSwoɞc [5laQIBHADED2mtFOE.c}088GNg9w߽ '0 ֠Jb 2y.-;!KZ ^i"L0- @8(r;q7Ly&Qq4j|9 V)gB0iW8#8wթ8_٥ʨQQj@&A)/g>'K t;\ ӥ$պFZUn(4T%)뫔0C&Zi8bxEB;Pӓ̹Aom?W= x- [ 0}y)7ta>jT7@tܛ`q2ʀ&6ZLĄ?_yxg)˔zçLU*uSkSeO4?c. R ߁-25 S>ӣVd`rn~Y&+`;A4 A9 =-tl`;~p Gp| [`L`< "AYA+Cb(R, *T2B- ꇆnQt}MA0alSx k&^>0|>_',G!"F$H:R!zFQd?r9\A&GrQhE]a4zBgE#H *B=0HIpp0MxJ$D1D, VĭKĻYdE"EI2EBGt4MzNr!YK ?%_(0J:EAiQ(()ӔWT6U@P+!~mDeԴ!hӦh/']B/ҏӿ?a0nhF!X8܌kc&5S6lIa2cKMA!E#ƒdV(kel }}Cq9 N')].uJr wG xR^[oƜchg`>b$*~ :Eb~,m,-ݖ,Y¬*6X[ݱF=3뭷Y~dó tizf6~`{v.Ng#{}}jc1X6fm;'_9 r:8q:˜O:ϸ8uJqnv=MmR 4 n3ܣkGݯz=[==<=GTB(/S,]6*-W:#7*e^YDY}UjAyT`#D="b{ų+ʯ:!kJ4Gmt}uC%K7YVfFY.=b?SƕƩȺy چk5%4m7lqlioZlG+Zzmzy]?uuw|"űNwW&e֥ﺱ*|j5kyݭǯg^ykEklD_p߶7Dmo꿻1ml{Mś nLl<9 [$h՛BdҞ@iءG&vVǥ8nRĩ7u\ЭD- u`ֲK³8%yhYѹJº;.! zpg_XQKFAǿ=ȼ:ɹ8ʷ6˶5̵5͵6ζ7ϸ9к<Ѿ?DINU\dlvۀ܊ݖޢ)߯6DScs 2F[p(@Xr4Pm8Ww)Km endstream endobj 19 0 obj << /Length 9008 >> stream /Cs6 CS 0 0 0 SCN 0 J 0 j 0.48 w 10 M []0 d /GS1 gs 1 i 48.02 75.04 m 546.98 75.04 l S BT /TT3 1 Tf 8 0 0 8 244.82 64 Tm /Cs6 cs 0 0 0 scn 0.0153 Tc 0.0187 Tw (Revista Odonto Cincia )Tj /TT2 1 Tf 11.19 0 TD 0.0145 Tc [( Fac. Odonto/PUCRS, v. 20, n. 47, jan./mar. 2005 )]TJ /TT1 1 Tf 10 0 0 10 534.62 64 Tm 0.0182 Tc 0 Tw (41)Tj /TT3 1 Tf 8 0 0 8 48.02 802.72 Tm 0.0152 Tc 0.0385 Tw (Anlise da presena do canal cavo-inter-radicular ...)Tj /TT2 1 Tf 46.545 0 TD 0.0156 Tc 0.0175 Tw (Cunha FS, Machado G, Neuvald L)Tj /TT8 1 Tf 11 0 0 11 48.02 775.12 Tm 0.0112 Tc 0 Tw (INTRODUO)Tj /TT1 1 Tf 10 0 0 10 65.06 756.4 Tm 0.0117 Tc 0.045 Tw (O conhecimento da morfologia do sistema de)Tj -1.704 -1.32 TD 0.0114 Tc -0.0183 Tw [(canais radiculares fundamental para o diagns)-24.6(-)]TJ T* 0.0105 Tc -0.0608 Tw (tico, tratamento, prognstico e proservao de ca-)Tj T* 0.012 Tc 0.0486 Tw (sos clnicos. Alm do canal principal temos uma)Tj T* 0.0116 Tc 0.087 Tw (rede de canais acessrios, secundrios, laterais,)Tj T* -0.0287 Tw [(interconduto e cavo)-36.3(-inter)23.7(-radicular)119.7(. O canal cavo)-36.3(-)]TJ T* -0.005 Tw [(inter)35.7(-radicular definido como aquele que sai do)]TJ T* 0.0164 Tc 0.1525 Tw [(assoalho da cmara pulpar)112.4(, percorre a dentina)]TJ T* 0.0118 Tc 0.032 Tw [(inter)35.8(-radicular e alcana o ligamento periodontal)]TJ T* 0.0178 Tc 0.1898 Tw [(na regio de furca \(Bramante, Bramante, V)101.8(ale,)]TJ T* 0.0119 Tc 0.123 Tw (1996\). Esse pode estabelecer uma comunicao)Tj T* -0.0466 Tw [(entre o complexo dentino)-48.2(-pulpar e o periodonto.)]TJ 1.704 -1.32 TD 0.0177 Tc 0.17 Tw (O mecanismo de formao desse canal no)Tj -1.704 -1.32 TD 0.0119 Tc 0.1529 Tw ( conhecido, mas provvel que ocorra duran-)Tj T* 0.0115 Tc -0.0537 Tw (te a formao do rgo dentrio, com o surgimen-)Tj T* 0.012 Tc 0.0857 Tw [(to de defeitos localizados na Bainha Epitelial de)]TJ T* 0.0117 Tc -0.05 Tw [(Hertwing \(Gutmann, 1978\). T)95.7(en Cate \(2001\) com-)]TJ T* 0.0118 Tc -0.0517 Tw (plementa colocando que aberraes na diviso do)Tj T* 0.1042 Tw (forame apical primrio podem levar a formao)Tj T* 0.0309 Tw [(de canais pulpo)-36.1(-periodontais nos locais de fuso)]TJ T* 0.0117 Tc -0.0083 Tw [(das lingetas do epitlio. J A)35.7(very \(1981\) diz que)]TJ T* -0.0245 Tw [(em reas onde a dentina est se formando e o de)-36.3(-)]TJ T* 0.0009 Tc -0.0608 Tw (senvolvimento da raiz encontra um vaso sangneo)Tj T* 0.0076 Tc -0.0612 Tw ( possvel que um tecido mineralizado se forme ao)Tj T* 0.0118 Tc -0.0462 Tw (redor dele, aparecendo um canal.)Tj 1.704 -1.32 TD 0.0291 Tw [(A conexo entre o complexo dentino)-36.2(-pulpar e)]TJ -1.704 -1.32 TD 0.0113 Tc -0.0608 Tw (o ligamento periodontal, na qual produtos txicos)Tj T* 0.0117 Tc 0.0442 Tw (podem passar por entre esses tecidos atravs de)Tj T* -0.0014 Tw [(uma rede de canais sugere a inter)35.7(-relao entre a)]TJ T* 0.0115 Tc 0.04 Tw (regio de furca de dentes multirradiculados com)Tj T* 0.018 Tc 0.2762 Tw (o desenvolvimento de leses endoperiodontais)Tj T* 0.0014 Tc -0.0608 Tw [(\(Simon, Glick, F)61.4(rank, 1971; Bender)109.4(, Seltzer)109.4(, 1972;)]TJ T* 0.0127 Tc 0.1529 Tw [(Gutmann, 1978; V)96.7(ertucci, Antony)108.7(, 1986; Saffar)108.7(,)]TJ T* 0.0114 Tc -0.003 Tw [(Giavanolli, 1988; Barkordar)107.4(, Stewart, 1990; Bra-)]TJ T* 0.012 Tc 0.022 Tw [(mante, Bramante, V)108(ale, 1996; Jansson, Ehnevid,)]TJ T* 0.0116 Tc 0.0166 Tw [(1998; F)83.6(avieri, Piacsek, F)59.6(reitas, 1999\). Dessa ma-)]TJ T* 0.0119 Tc -0.0593 Tw [(neira, Motta, Milano \(2002\) colocam que seria de)-36.1(-)]TJ T* 0.0358 Tw (sejvel a instrumentao e o adequado preenchi-)Tj T* 0.0183 Tc 0.175 Tw (mento desse canal com material biocompatvel)Tj T* 0.0117 Tc -0.03 Tw (aps a obturao dos canais principais.)Tj 1.704 -1.32 TD 0.012 Tc 0.0571 Tw (Assim, este estudo tem o objetivo de identifi-)Tj -1.704 -1.32 TD 0.0115 Tc 0.1431 Tw (car na regio de assoalho de cmara pulpar de)Tj T* 0.0083 Tc -0.0609 Tw [(molares superiores e inferiores o canal cavo)-39.7(-inter)32.3(-)]TJ T* 0.0061 Tc 0 Tw [(radicular)102.1(.)]TJ /TT8 1 Tf 11 0 0 11 48.02 157 Tm 0.0091 Tc (METODOLOGIA)Tj 0 -1.7891 TD 0.0095 Tc 0.0046 Tw (Seleo das amostras)Tj /TT1 1 Tf 10 0 0 10 65.06 120.04 Tm 0.0114 Tc 0.0536 Tw (A partir de uma amostra de dentes humanos)Tj -1.704 -1.32 TD 0.0118 Tc 0.0162 Tw (extrados foram selecionados aleatoriamente vin-)Tj T* 0.0167 Tw (te e um molares superiores e vinte e um molares)Tj 26.088 68.292 TD 0.0114 Tc 0.0529 Tw (inferiores. A integridade da coroa dentria e dos)Tj 0 -1.296 TD 0.0118 Tc 0.009 Tw (teros radiculares foram utilizados como critrio)Tj T* -0.0011 Tc -0.0612 Tw (de incluso das amostras no estudo. Sendo os den-)Tj 0 -1.308 TD 0.0117 Tc -0.0188 Tw [(tes oriundos de doao, as fichas clnicas dos pa-)]TJ 0 -1.296 TD 0.0118 Tc 0.0733 Tw (cientes no foram analisadas, portanto o motivo)Tj T* 0.1368 Tw (da exodontia, bem como a posio do dente na)Tj 0 -1.308 TD 0.0115 Tc 0.0308 Tw (arcada dentria no eram conhecidos. Os dentes)Tj 0 -1.296 TD 0.0179 Tc 0.1737 Tw (selecionados foram previamente desinfetados e)Tj T* 0.0119 Tc -0.045 Tw (armazenados em soro fisiolgico.)Tj /TT8 1 Tf 11 0 0 11 308.9 648.16 Tm 0.0095 Tc 0.0091 Tw [(P)29.8(reparo das amostras)]TJ /TT1 1 Tf 10 0 0 10 325.82 631 Tm 0.0175 Tc 0.1962 Tw (Aberturas coronrias foram realizadas com)Tj -1.692 -1.296 TD 0.0159 Tc 0.1528 Tw (pontas diamantadas 1014 \(S.S. White Rio de)Tj 0 -1.308 TD 0.0176 Tc 0.3967 Tw [(Janeiro, Brasil\) e broca Endo)-18.4(-Z \(Dentsply )]TJ 0 -1.296 TD 0.0118 Tc -0.0591 Tw [(K)25(onstanz, Alemanha\) novas, em alta rotao, com)]TJ T* 0.0115 Tc 0.1458 Tw (irrigao constante. Os orifcios de entrada dos)Tj 0 -1.308 TD 0.0117 Tc 0.149 Tw (canais radiculares foram localizados com limas)Tj 0 -1.296 TD 0.0118 Tc 0.0449 Tw [(endodnticas # 10 e # 15 \(Dentsply K)23.8(onstanz,)]TJ T* 0.0177 Tc 0.1678 Tw (Alemanha\). A seguir dois cortes, com disco de)Tj 0 -1.308 TD 0.0175 Tc 0.298 Tw (carborundum e ponta diamantada 3070 \(S.S.)Tj 0 -1.296 TD 0.0116 Tc 0.08 Tw (White Rio de Janeiro, Brasil\), perpendiculares)Tj T* -0.0219 Tw (ao longo eixo de cada dente foram realizados, um)Tj 0 -1.308 TD 0.012 Tc 0.0821 Tw (corte 2 mm acima da juno amelocementria e)Tj 0 -1.296 TD 0.0115 Tc -0.0225 Tw (outro corte 2 mm abaixo da regio da furca.)Tj /TT8 1 Tf 11 0 0 11 308.9 450.28 Tm 0.0094 Tc 0.0114 Tw (Limpeza das amostras)Tj /TT1 1 Tf 10 0 0 10 325.82 431.8 Tm 0.0116 Tc 0.1042 Tw (As amostras foram colocadas em soluo de)Tj -1.692 -1.308 TD 0.0183 Tc 0.2187 Tw [(hipoclorito de sdio a 2%, V)42.3(irex)]TJ 6.6 0 0 6.6 476.54 422.08 Tm 0 Tc 0 Tw ()Tj 10 0 0 10 481.94 418.72 Tm 0.0173 Tc 0.22 Tw [( \(Johnson &)]TJ -17.304 -1.296 TD 0.0115 Tc -0.0362 Tw [(Johnson So Jos dos Campos, So P)47.5(aulo\), por)]TJ T* 0.008 Tc -0.0607 Tw (uma hora, para que sua ao qumica promovesse)Tj 0 -1.308 TD 0.0115 Tc 0.08 Tw (a solvncia dos tecidos orgnicos aderidos su-)Tj 0 -1.296 TD 0.0579 Tw (perfcie dentria. A seguir as amostras foram la-)Tj T* 0.0688 Tw (vadas em gua corrente por oito horas para que)Tj 0 -1.308 TD 0.0119 Tc 0.0625 Tw [(os resduos da soluo fossem totalmente remo)-24.1(-)]TJ 0 -1.296 TD 0.018 Tc 0.2791 Tw (vidos. Sendo ento, imersos em cido etileno)Tj T* 0.0117 Tc 0.095 Tw [(diamino tetractico \(EDT)71.7(A\) trissdico \(F)83.7(armcia)]TJ 0 -1.308 TD 0.0112 Tc 0 Tw (Calndula)Tj 6.6 0 0 6.6 357.38 305.08 Tm 0 Tc ()Tj 10 0 0 10 362.9 301.72 Tm 0.0116 Tc -0.0163 Tw [(, P)47.6(orto Alegre, Rio Grande do Sul\) por)]TJ -5.4 -1.296 TD 0.0119 Tc 0.0434 Tw (quinze minutos, para que assim, obtivssemos a)Tj T* 0.0103 Tc -0.06 Tw (remoo da )Tj /TT10 1 Tf 5.844 0 TD 0.0101 Tc (smear layer)Tj /TT1 1 Tf 5.916 0 TD 0.0112 Tc -0.061 Tw [(. A seguir)119.2(, as peas foram)]TJ -11.76 -1.308 TD 0.0118 Tc -0.0157 Tw [(novamente lavadas em gua corrente por oito ho)-24.2(-)]TJ 0 -1.296 TD 0.0091 Tc -0.0609 Tw [(ras e secas com jatos de ar)117.1(. Aps nova lavagem em)]TJ T* 0.0104 Tc (gua corrente elas passaram pelo banho em ultra-)Tj 0 -1.308 TD 0.0119 Tc 0.0841 Tw (som com acetona pr-anlise, durante 30 minu-)Tj 0 -1.296 TD 0.0544 Tw (tos. A secagem final de cada amostra foi feita na)Tj T* 0.0117 Tc -0.0106 Tw [(cmara de ponto crtico \(Critical P)47.7(oint Dry CPD)]TJ 0 -1.308 TD -0.035 Tw (modelo CPD 030/Baltec\). As amostras foram fixa-)Tj 0 -1.296 TD 0.012 Tc 0.0707 Tw (das em um suporte metlico e, ento receberam)Tj T* 0.0114 Tc -0.0609 Tw [(uma fina camada de ouro \(A)23.4(u\) de 30 nm de espes)-12.6(-)]TJ 0 -1.308 TD 0.0092 Tc -0.061 Tw (sura. Seqencialmente, foram aplicadas siglas em)Tj 0 -1.296 TD 0.0116 Tc 0.0584 Tw (cada amostra para facilitar sua identificao du-)Tj T* 0.0242 Tw [(rante a anlise: MID)35.5(, molar inferior direito; MIE,)]TJ 0 -1.308 TD 0.0114 Tc -0.0509 Tw [(molar inferior esquerdo; MSD)47.4(, molar superior di-)]TJ 0 -1.296 TD 0.0117 Tc -0.036 Tw (reito e MSE, molar superior esquerdo.)Tj ET endstream endobj 20 0 obj << /ProcSet [/PDF /Text ] /Font << /TT1 4 0 R /TT2 5 0 R /TT3 6 0 R /TT8 11 0 R /TT10 13 0 R >> /ExtGState << /GS1 14 0 R >> /ColorSpace << /Cs6 15 0 R >> >> endobj 22 0 obj << /Length 4498 >> stream /Cs6 CS 0 0 0 SCN 0 J 0 j 0.48 w 10 M []0 d /GS1 gs 1 i 48.02 75.04 m 546.98 75.04 l S BT /TT1 1 Tf 10 0 0 10 48.02 64 Tm /Cs6 cs 0 0 0 scn 0.0062 Tc 0 Tw (42)Tj /TT2 1 Tf 8 0 0 8 60.5 64 Tm 0.0396 Tc [( )28.1( )]TJ /TT3 1 Tf 1.635 0 TD 0.0152 Tc 0.0292 Tw (Revista Odonto Cincia )Tj /TT2 1 Tf 11.22 0 TD 0.0144 Tc 0.0287 Tw [( Fac. Odonto/PUCRS, v)74.4(.)1( 20, n. 47, jan./mar)44.4(. 2005)]TJ /TT3 1 Tf -14.415 92.34 TD 0.0152 Tc 0.0385 Tw (Anlise da presena do canal cavo-inter-radicular ...)Tj /TT2 1 Tf 46.545 0 TD 0.0156 Tc 0.0175 Tw (Cunha FS, Machado G, Neuvald L)Tj /TT8 1 Tf 11 0 0 11 48.02 775.12 Tm 0.0098 Tc 0.0011 Tw (Anlise atravs da microscopia eletrnica)Tj 0 -1.1782 TD 0.0095 Tc -0.0045 Tw (de varredura)Tj /TT1 1 Tf 10 0 0 10 65.06 743.4401 Tm 0.0147 Tc 0.1525 Tw (As amostras foram analisadas no MEV \(mi-)Tj -1.704 -1.32 TD 0.0118 Tc 0.0025 Tw (croscpio eletrnico de varredura\), Philips)Tj 6.6 0 0 6.6 255.38 733.6 Tm 0 Tc 0 Tw ()Tj 10 0 0 10 260.78 730.24 Tm 0.0133 Tc 0.005 Tw [(, mo)-34.7(-)]TJ -21.276 -1.32 TD 0.0097 Tc -0.0609 Tw (delo XL30 \(Philips, Holanda\), pertencente ao Cen-)Tj T* -0.0016 Tc -0.0612 Tw [(tro de Microscopia e Microanlises)-25.6(-)-20.5(CEMM/PUCRS.)]TJ T* 0.0116 Tc 0.1057 Tw (O assoalho da cmara pulpar de cada espcime)Tj T* 0.0793 Tw (foi dividido em quadrantes e cada quadrante foi)Tj T* 0.0074 Tc -0.0607 Tw (analisado quanto presena ou no de foraminas.)Tj T* 0.0116 Tc 0.0717 Tw (O dimetro dos tbulos dentinrios foi utilizado)Tj T* 0.0166 Tw (como padro para a identificao das foraminas,)Tj T* 0.0165 Tc 0.1525 Tw (sendo que foraminas de maior dimetro foram)Tj T* -0.0015 Tc -0.0612 Tw [(consideradas como canal cavo)-37.5(-inter)34.5(-radicular)118.5(, con-)]TJ T* 0.0114 Tc 0.0819 Tw [(forme F)11.4(igs. 1 a 5. 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[(Inf)16.3(e)8.7(rior 21 )-776.3(22,60 )-2434.2( )]TJ ET 0 0 0 scn 48.98 645.88 52.56 0.6 re f 48.98 646.48 m 101.54 646.48 l S 101.54 645.88 0.48 0.6 re f 101.54 646.48 m 102.02 646.48 l 101.54 646.48 m 101.54 645.88 l S 102.02 645.88 67.44 0.6 re f 102.02 646.48 m 169.46 646.48 l S 169.46 645.88 0.36 0.6 re f 169.46 646.48 m 169.82 646.48 l 169.46 646.48 m 169.46 645.88 l S 169.82 645.88 59.76 0.6 re f 169.82 646.48 m 229.58 646.48 l S 229.58 645.88 0.48 0.6 re f 229.58 646.48 m 230.06 646.48 l 229.58 646.48 m 229.58 645.88 l S 230.06 645.88 56.04 0.6 re f q 48.02 690.76 238.08 -50.16 re W n 230.06 646.48 m 286.1 646.48 l S Q BT /TT1 1 Tf 9 0 0 9 48.02 613.84 Tm 0.0081 Tc 0.0556 Tw [(T)66.5(ABELA 2)]TJ /TT8 1 Tf 5.0533 0 TD 0.0094 Tc 0.0611 Tw [( )]TJ /TT1 1 Tf 1.3067 0 TD 0.0086 Tc 0.0566 Tw [(Resultados do teste Qui-)-31.4(quadrado para a)]TJ -6.36 -1.1067 TD 0.0428 Tw (verificao da presena ou ausncia de foraminas: Su-)Tj 0 -1.12 TD 0.0083 Tc 0.0043 Tw [(perior e Inferior 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\()6(55,6%\))6( )-3933.4(21 )]TJ 0.48 -1.4533 TD 0.0058 Tc 5.6909 Tw [(T)16.6(o)-0.9(ta)9.6(l)-9.7( )800(33 9 42 )]TJ ET 48.14 510.04 60.36 0.48 re f q 48.02 583 238.08 -77.76 re W n 48.14 510.52 m 108.5 510.52 l S Q 108.5 510.04 0.48 0.48 re f 108.5 510.52 m 108.98 510.52 l 108.5 510.52 m 108.5 510.04 l S 108.98 510.04 59.88 0.48 re f 108.98 510.52 m 168.86 510.52 l S 168.86 510.04 0.48 0.48 re f 168.86 510.52 m 169.34 510.52 l 168.86 510.52 m 168.86 510.04 l S 169.34 510.04 59.88 0.48 re f 169.34 510.52 m 229.22 510.52 l S 229.22 510.04 0.48 0.48 re f 229.22 510.52 m 229.7 510.52 l 229.22 510.52 m 229.22 510.04 l S 229.7 510.04 56.4 0.48 re f q 48.02 583 238.08 -77.76 re W n 229.7 510.52 m 286.1 510.52 l S Q BT /TT1 1 Tf 7 0 0 7 48.02 497.2 Tm 0.0208 Tc -0.0249 Tw (p > 0,05.)Tj 10 0 0 10 308.9 776.6801 Tm 0.0116 Tc -0.0608 Tw [(Gutmann, 1978; V)95.6(ertucci, Antony)107.6(, 1986; Braman-)]TJ 0 -1.296 TD 0.0178 Tc 0.1935 Tw [(te, Bramante, V)113.8(ale, 1996\). J de Deus \(1975\);)]TJ 0 -1.284 TD 0.0117 Tc -0.0414 Tw [(Hession \(1977\) e Motta, Milano \(2002\) no obser)47.7(-)]TJ 0 -1.296 TD 0.0114 Tc 0.0233 Tw [(varam foraminas na regio inter)35.4(-radicular ou en-)]TJ 0 -1.284 TD 0.0119 Tc 0.0017 Tw (to quando presentes essas estavam em pequeno)Tj 0 -1.296 TD -0.0359 Tw (nmero e no mereceram destaque dos autores.)Tj 1.692 -1.284 TD 0.0114 Tc -0.0475 Tw (Concordando com Burch, Hulen \(1974\) e con-)Tj -1.692 -1.296 TD 0.0167 Tc 0.1532 Tw [(trapondo)-31.3(-)-38.2(se a outros autores \(Gutmann, 1978;)]TJ 0 -1.284 TD 0.0018 Tc -0.0611 Tw [(V)105.8(ertucci, Antony)97.8(, 1986; Bramante, Bramante, V)109.8(ale,)]TJ 0 -1.296 TD 0.0168 Tc 0.153 Tw (1996\) os molares superiores apresentaram um)Tj 0 -1.284 TD 0.0116 Tc 0.1371 Tw (maior nmero de foraminas do que os molares)Tj 0 -1.296 TD -0.0358 Tw (inferiores, todavia essa diferena no foi estatisti-)Tj 0 -1.284 TD 0.0118 Tc -0.0299 Tw [(camente significante \(T)71.8(abelas 1 e 2\).)]TJ 1.692 -1.296 TD 0.0049 Tc -0.0607 Tw (A alta prevalncia de foraminas no assoalho da)Tj -1.692 -1.308 TD 0.0115 Tc -0.0587 Tw [(cmara pulpar \(F)23.5(igs. 1 a 5\) sugere que uma maior)]TJ 0 -1.296 TD 0.0082 Tc -0.0612 Tw (ateno deva ser dada a essa regio, pois acredita-)Tj T* 0.0116 Tc 0.151 Tw [(se que a presena do canal cavo)-36.4(-inter)35.6(-radicular)]TJ 0 -1.308 TD 0.0056 Tc -0.0608 Tw (possa ser responsvel pelo agravamento ou desen-)Tj 0 -1.296 TD 0.0117 Tc 0.05 Tw (volvimento da doena periodontal secundria ou)Tj T* -0.0334 Tw (de leses endoperiodontais, nos casos de necrose)Tj 0 -1.308 TD 0.0119 Tc -0.011 Tw [(pulpar)107.9(. A polpa e o periodonto so tecidos que se)]TJ 0 -1.296 TD 0.0528 Tw (interconectam atravs do sistema de canais e do)Tj T* 0.1083 Tw (forame principal. Assim, a possvel presena de)Tj 0 -1.308 TD 0.0115 Tc -0.0245 Tw (foraminas na regio de furca e no assoalho da c-)Tj 0 -1.296 TD -0.0505 Tw (mara pode servir de via para a penetrao de bac-)Tj T* 0.0113 Tc -0.0612 Tw [(trias e seus subprodutos. P)47.3(or outro lado, a doen-)]TJ 0 -1.308 TD 0.0118 Tc 0.0421 Tw (a periodontal severa com perda de tecido sseo)Tj 0 -1.296 TD 0.0115 Tc 0.0632 Tw [(na regio de furca pode expor as foraminas pre)-24.5(-)]TJ T* 0.0118 Tc -0.0382 Tw [(sentes nessa regio, tornando)-36.2(-as suscetveis a pe)-24.2(-)]TJ T* 0.0075 Tc -0.061 Tw (netrao dos periodontopatgenos que podem ini-)Tj 0 -1.308 TD 0.014 Tc 0.1529 Tw (ciar a infeco do tecido pulpar \(Simon, Glick,)Tj 0 -1.296 TD 0.0177 Tc 0.2059 Tw [(F)87.5(rank, 1971; Bender)101.7(, Seltzer)101.7(, 1972; Gutmann,)]TJ T* 0.0118 Tc 0.0948 Tw [(1978; V)95.8(ertucci, Antony)119.8(, 1986; Saffar)95.8(, Giavanolli,)]TJ 0 -1.308 TD 0.0115 Tc 0.025 Tw [(1988; Barkordar)119.5(, Stewart, 1990; Bramante, Bra-)]TJ 0 -1.296 TD 0.0118 Tc 0.0991 Tw [(mante, V)107.8(ale, 1996; Jansson, Ehnevid, 1998; F)95.8(a)4.9(-)]TJ T* 0.0123 Tc -0.0366 Tw [(vieri, Piacsek, F)84.3(r)0.2(eitas, 1999\).)]TJ 1.692 -1.308 TD -0.011 Tc -0.061 Tw (Alm disso, concordando com Gutmann \(1978\);)Tj -1.692 -1.296 TD -0.0019 Tc -0.0612 Tw [(V)102.1(ertucci, Antony \(1986\); Bramante, Bramante, V)118.1(ale)]TJ T* 0.016 Tc 0.1528 Tw (\(1996\), aps a obturao do sistema de canais)Tj 0 -1.308 TD 0.0118 Tc -0.006 Tw (radiculares mltiplos esforos devem ser realiza-)Tj 0 -1.296 TD 0.0117 Tc -0.0213 Tw (dos no intuito de selar as foraminas presentes no)Tj T* 0.0115 Tc 0.0642 Tw (assoalho da cmara pulpar dos dentes multirra-)Tj 0 -1.308 TD 0.1117 Tw (diculares de modo a diminuir a permeabilidade)Tj 0 -1.296 TD 0.135 Tw (dessa regio e aumentar as chances de sucesso)Tj T* -0.05 Tw (do tratamento.)Tj /TT8 1 Tf 11 0 0 11 308.9 177.16 Tm 0.0112 Tc 0 Tw [(CONCL)54.8(USES)]TJ /TT1 1 Tf 10 0 0 10 325.82 158.68 Tm 0.0178 Tc 0.1885 Tw [(1)6.9(.)-486.2(O dimetro e o nmero de tbulos den-)]TJ -1.692 -1.308 TD 0.0118 Tc -0.055 Tw (tinrios encontrados por mm)Tj 6 0 0 6 449.66 148.6 Tm 0 Tc 0 Tw (2)Tj 10 0 0 10 453.38 145.6 Tm 0.0122 Tc -0.0563 Tw [(, assim como a pre)-35.8(-)]TJ -14.448 -1.296 TD 0.0034 Tc -0.0608 Tw [(sena de foraminas no assoalho da cmara pulpar)111.4(,)]TJ T* 0.0118 Tc -0.045 Tw (sugerem a permeabilidade)Tj 6 0 0 6 435.98 122.68 Tm 0 Tc 0 Tw ( )Tj 10 0 0 10 437.66 119.68 Tm 0.0113 Tc -0.05 Tw (dessa regio.)Tj -11.184 -1.308 TD 0.0176 Tc 0.163 Tw [(2)6.7(.)-486.4(O dimetro maior de algumas foraminas)]TJ -1.692 -1.296 TD 0.0114 Tc -0.0499 Tw [(sugere a presena do canal cavo)-36.6(-inter)35.4(-radicular)119.4(.)]TJ /TT8 1 Tf 11 0 0 11 48.02 451 Tm 0.012 Tc 0 Tw (DISCUSSO)Tj /TT1 1 Tf 10 0 0 10 65.06 430.96 Tm 0.0117 Tc 0.045 Tw (O conhecimento da morfologia do sistema de)Tj -1.704 -1.296 TD 0.0036 Tc -0.0608 Tw (canais radiculares fundamental para o tratamen-)Tj T* 0.0117 Tc 0.1241 Tw (to endodntico, uma vez que devemos procurar)Tj 0 -1.308 TD 0.0179 Tc 0.1909 Tw (eliminar todas as possveis vias de penetrao)Tj 0 -1.296 TD 0.0124 Tc 0.1524 Tw (microbiana. Os canais laterais e acessrios so)Tj T* 0.0115 Tc -0.039 Tw (componentes normais da morfologia radicular da)Tj 0 -1.308 TD 0.0117 Tc -0.0408 Tw (dentio humana. Especial ateno deve ser dada)Tj 0 -1.296 TD 0.0115 Tc 0.0422 Tw (a regio de bi ou trifurcao de molares aonde o)Tj T* 0.0119 Tc 0.1381 Tw [(canal cavo)-36.1(-inter)35.9(-radicular pode estar presente e)]TJ 0 -1.308 TD -0.015 Tw (constituir comunicao entre a cavidade pulpar e)Tj 0 -1.296 TD -0.0566 Tw (o ligamento periodontal adjacente.)Tj 1.704 -1.296 TD 0.0176 Tc 0.165 Tw (Nesse estudo apenas o assoalho da cmara)Tj -1.704 -1.308 TD 0.0042 Tc -0.0609 Tw (pulpar foi analisado, diferentemente de outros tra-)Tj 0 -1.296 TD 0.0115 Tc 0.068 Tw [(balhos \(Gutmann, 1978; V)95.5(ertucci, Antony)95.5(, 1986;)]TJ T* -0.0058 Tw [(Bramante, Bramante, V)95.6(ale, 1996\), aonde a regio)]TJ 0 -1.308 TD 0.0129 Tw (de furca tambm foi estudada. Da mesma forma,)Tj 0 -1.296 TD 0.0119 Tc -0.0234 Tw (o trajeto descrito pelos canais acessrios identifi-)Tj T* 0.0176 Tc 0.2365 Tw (cados no assoalho no foi verificado devido )Tj 0 -1.308 TD 0.0116 Tc 0.0475 Tw [(metodologia empregada. Assim, algumas forami-)]TJ 0 -1.296 TD 0.0007 Tc -0.0607 Tw (nas, embora identificadas, podem no servir de via)Tj T* 0.0116 Tc 0.0907 Tw (de ligao constituindo um fundo cego. A regio)Tj 0 -1.308 TD 0.0114 Tc 0.12 Tw (da furca e a acessibilidade das foraminas sero)Tj 0 -1.296 TD 0.0121 Tc -0.035 Tw (objetivos de um prximo trabalho.)Tj 1.704 -1.296 TD 0.0116 Tc 0.1062 Tw [(A alta prevalncia \(F)23.6(igs. 1 e 2\) de foraminas)]TJ -1.704 -1.284 TD 0.0257 Tw (no assoalho da cmara pulpar corrobora com os)Tj 0 -1.296 TD -0.0608 Tw [(achados de outros autores \(Bender)107.5(, Seltzer)107.5(, 1972;)]TJ 0 -1.284 TD -0.0043 Tc [(Lowman, Burke, P)43.7(elleu, 1973; Burch, Hulen, 1974;)]TJ ET endstream endobj 33 0 obj << /ProcSet [/PDF /Text ] /Font << /TT1 4 0 R /TT2 5 0 R /TT3 6 0 R /TT8 11 0 R /TT11 34 0 R /TT12 35 0 R >> /ExtGState << /GS1 14 0 R >> /ColorSpace << /Cs6 15 0 R >> >> endobj 37 0 obj << /Length 7631 >> stream /Cs6 CS 0 0 0 SCN 0 J 0 j 0.48 w 10 M []0 d /GS1 gs 1 i 48.02 75.04 m 546.98 75.04 l S BT /TT1 1 Tf 10 0 0 10 48.02 64 Tm /Cs6 cs 0 0 0 scn 0.0062 Tc 0 Tw (44)Tj /TT2 1 Tf 8 0 0 8 60.5 64 Tm 0.0396 Tc [( )28.1( )]TJ /TT3 1 Tf 1.635 0 TD 0.0152 Tc 0.0292 Tw (Revista Odonto Cincia )Tj /TT2 1 Tf 11.22 0 TD 0.0144 Tc 0.0287 Tw [( Fac. 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F)82(requency)108.6(, location and direction of)]TJ 1.8933 -1.12 TD 0.0208 Tc 0.3676 Tw [(the lateral, secondary and acessory canals. J)60.8(.)]TJ 0 -1.1067 TD 0.0146 Tc 0.0056 Tw (Endod \(Seattle\). 1975;1\(11\):361-6.)Tj -1.8933 -1.4267 TD 0.0149 Tc 0.145 Tw [( )141.7( )141.7(7.)-305.1(F)88.7(avieri A)-11.8(,)0.3( Piasek M, F)68.2(reitas RM. T)14.9(ratamento das)]TJ 1.8933 -1.1067 TD 0.0171 Tc 0.1534 Tw (leses endoperiodontais: Reviso de Literatura e)Tj 0 -1.12 TD 0.0146 Tc -0.0201 Tw [(Relato de Caso. Rev P)41.3(eriod \(Rio de Janeiro\). 1999;)]TJ 0 -1.1067 TD 0.0145 Tc 0 Tw (8\(1\):33-8.)Tj 27.0933 43.12 TD 0.0153 Tc 0.1063 Tw [( )103.4( )103.4(8.)-291.4(Gutmann JL. 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