1 Adesivos 3M ESPE. 2 1997 Single Bond 1999 Prompt L-Pop 2002 Adper Prompt L-Pop 2004 Adper Single...

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1 Adesivos 3M ESPE

Transcript of 1 Adesivos 3M ESPE. 2 1997 Single Bond 1999 Prompt L-Pop 2002 Adper Prompt L-Pop 2004 Adper Single...

Page 1: 1 Adesivos 3M ESPE. 2 1997 Single Bond 1999 Prompt L-Pop 2002 Adper Prompt L-Pop 2004 Adper Single Bond 2 (nanopartículas) 2008 Adper SE Plus e Adper.

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Adesivos 3M ESPE

Page 2: 1 Adesivos 3M ESPE. 2 1997 Single Bond 1999 Prompt L-Pop 2002 Adper Prompt L-Pop 2004 Adper Single Bond 2 (nanopartículas) 2008 Adper SE Plus e Adper.

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1997 Single Bond

1999 Prompt L-Pop

2002 Adper Prompt L-Pop

2004 Adper Single Bond 2 (nanopartículas)

2008 Adper SE Plus e Adper EasyOne Adesivos Autocondicionantes

1983 Scotchbond (Auto-polimerizável)

1984 Scotchbond (Fotopolimerizável)

1985 Scotchbond Dual

1987 Scotchbond 2

1992 Scotchbond Multi-Uso

1994 Scotchbond Multi-Uso Plus

Adesivos 3M ESPE

Page 3: 1 Adesivos 3M ESPE. 2 1997 Single Bond 1999 Prompt L-Pop 2002 Adper Prompt L-Pop 2004 Adper Single Bond 2 (nanopartículas) 2008 Adper SE Plus e Adper.

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1: Boff LL, Grossi ML, Prates LH, Burnett LH, Shinkai RS.

Effect of the activation mode of post adhesive cementation on push-out bond strength to root canal dentin. Quintessence Int. 2007 May;38(5):387-94. PMID: 17568837 [PubMed - in process]

2: Betamar N, Cardew G, Van Noort R. Influence of specimen designs on the microtensile bond strength to dentin. J Adhes Dent. 2007 Apr;9(2):159-68. PMID: 17489476 [PubMed - indexed for MEDLINE]

3: Yamazaki PC, Bedran-Russo AK, Pereira PN. Importance of the hybrid layer on the bond strength of restorations subjected to cyclic loading. J Biomed Mater Res B Appl Biomater. 2007 Apr 30; [Epub ahead of print] PMID: 17471521 [PubMed - as supplied by publisher]

4: Mallmann A, Jacques LB, Valandro LF, Muench A. Microtensile bond strength of photoactivated and autopolymerized adhesive systems to root dentin using translucent and opaque fiber-reinforced composite posts. J Prosthet Dent. 2007 Mar;97(3):165-72. PMID: 17394915 [PubMed - indexed for MEDLINE]

5: Omar H, El-Badrawy W, El-Mowafy O, Atta O, Saleem B. Microtensile bond strength of resin composite bonded to caries-affected dentin with three adhesives. Oper Dent. 2007 Jan-Feb;32(1):24-30. PMID: 17288325 [PubMed - in process]

6: Gamborgi GP, Loguercio AD, Reis A. Influence of enamel border and regional variability on durability of resin-dentin bonds. J Dent. 2007 May;35(5):371-6. Epub 2006 Dec 28. PMID: 17196319 [PubMed - in process]

7: Tan JG, Zhou LJ, Feng M, Feng HL. [Micro-tensile bond strength to sclerotic dentin in non-carious cervical lesions Zhonghua Kou Qiang Yi Xue Za Zhi. 2006 Sep;41(9):559-62. Chinese. PMID: 17129432 [PubMed - in process]

8: Ibarra G, Vargas MA, Geurtsen W. Interfacial and surface characterization of two self-etching adhesive systems and a total-etch adhesive after bonding to ground and unground bovine enamel—a qualitative study. Clin Oral Investig. 2006 Dec;10(4):331-41. Epub 2006 Nov 21. PMID: 17120077 [PubMed - indexed for MEDLINE]

9: Miranda C, Prates LH, Vieira Rde S, Calvo MC. Shear bond strength of different adhesive systems to primary dentin and enamel. J Clin Pediatr Dent. 2006 Fall;31(1):35-40. PMID: 17091656 [PubMed - indexed for MEDLINE]

10: Asmussen E, Peutzfeldt A. Bonding of dual-curing resin cements to dentin.

J Adhes Dent. 2006 Oct;8(5):299-304. PMID: 17080877 [PubMed - indexed for MEDLINE]

11: Casagrande L, de Hipolito V, de Goes MF, Barata JS, Garcia-Godoy F, de Araujo

FB. Bond strength and failure patterns of adhesive restorations in primary teeth aged in the oral environment. Am J Dent. 2006 Oct;19(5):279-82. PMID: 17073204 [PubMed - indexed for MEDLINE]

12: Puppin-Rontani RM, de Goes MF, Voelske CE, Garcia-Godoy F. Clinical performance and SEM evaluation of direct composite restorations in primary molars.Am J Dent. 2006 Oct;19(5):255-61. PMID: 17073199 [PubMed - indexed for MEDLINE]

13: Fabre HS, Fabre S, Cefaly DF, de Oliveira Carrilho MR, Garcia FC, Wang L. Water sorption and solubility of dentin bonding agents light-cured with different light sources. J Dent. 2007 Mar;35(3):253-8. Epub 2006 Oct 12. PMID: 17045723 [PubMed - indexed for MEDLINE]

14: de Silva AL, Lima DA, de Souza GM, dos Santos CT, Paulillo LA Influence of additional adhesive application on the microtensile bond strength of adhesive systems. Oper Dent. 2006 Sep-Oct;31(5):562-8. PMID: 17024944 [PubMed - indexed for MEDLINE]

15: Purk JH, Healy M, Dusevich V, Glaros A, Eick JD. In vitro microtensile bond strength of four adhesives tested at the gingival and pulpal walls of Class II restorations. J Am Dent Assoc. 2006 Oct;137(10):1414-8. PMID: 17012721 [PubMed - indexed for MEDLINE]

16: Brandt PD, de Wet FA, du Preez IC. Self-etching bonding systems: in-vitro micro-leakage evaluation. SADJ. 2006 Jul;61(6):248, 250-1. PMID: 16977953 [PubMed - indexed for MEDLINE]

17: Alonso RC, Cunha LG, Correr GM, Puppin-Rontani RM, Correr-Sobrinho L, Sinhoreti MA. Marginal adaptation of composite restorations photoactivated by LED, plasma arc, and QTH light using low-modulus resin liners. J Adhes Dent. 2006 Aug;8(4):223-8. PMID: 16958286 [PubMed - indexed for MEDLINE]

18: Owens BM, Johnson WW. Effect of new generation surface sealants on the marginal permeability of Class V resin composite restorations. Oper Dent. 2006 Jul-Aug;31(4):481-8. PMID: 16924989 [PubMed - indexed for MEDLINE]

19: Gueders AM, Charpentier JF, Albert AI, Geerts SO. Microleakage after thermocycling of 4 etch and rinse and 3 self-etch adhesives with and without a flowable composite lining. Oper Dent. 2006 Jul-Aug;31(4):450-5. PMID: 16924985 [PubMed indexed for MEDLINE]

20: Loguercio AD, Reis A, Bortoli G, Patzlaft R, Kenshima S, Rodrigues Filho LE,

Accorinte Mde L, van Dijken JW. Influence of adhesive systems on interfacial dentin gap formation in vitro. Oper Dent. 2006 Jul-Aug;31(4):431-41. PMID: 16924983 [PubMed - indexed for MEDLINE]

21: Perdigao J, Gomes G. Effect of instrument lubricant on the cohesive strength of a hybrid resin composite. Quintessence Int. 2006 Sep;37(8):621-5. PMID: 16922021 [PubMed - indexed for MEDLINE]

22: de Menezes MJ, Arrais CA, Giannini M. Influence of light-activated and auto- and dual-polymerizing adhesive systems on bond strength of indirect composite resin to dentin. J Prosthet Dent. 2006 Aug;96(2):115-21. PMID: 16911888 [PubMed – indexed for MEDLINE]

23: Armstrong SR, Jessop JL, Vargas MA, Zou Y, Qian F, Campbell JA, Pashley DH. Effects of exogenous collagenase and cholesterol esterase on the durability of the resin dentin bond. J Adhes Dent. 2006 Jun;8(3):151-60. PMID: 16830661 [PubMed - indexed or MEDLINE]

24: Brackett WW, Ito S, Nishitani Y, Haisch LD, Pashley DH. The microtensile bond strength of self-etching adhesives to ground enamel. Oper Dent. 2006 May Jun;31(3):332-7. Erratum in: Oper Dent. 2006 Jul-Aug;31(4):520. PMID: 16802641 [PubMed - indexed for MEDLINE]

25: Cadenaro M, Breschi L, Antoniolli F, Mazzoni A, Di Lenarda R. Influence of whitening on the degree of conversion of dental adhesives on dentin. Eur J Oral Sci. 2006 Jun;114(3):257-62. PMID: 16776776 [PubMed - indexed for MEDLINE]

26: Latta MA, Kelsey WP 3rd, Kelsey WP 5th. Effect of polymerization mode of adhesive and cement on shear bond strength to dentin. Am J Dent. 2006 Apr;19(2):96 100. PMID: 16764132 [PubMed - indexed for MEDLINE]

27: Garoushi SK, Ballo AM, Lassila LV, Vallittu PK. Fracture resistance of fragmented incisal edges restored with fiber-reinforced composite. J Adhes Dent. 2006 Apr;8(2):91 5. PMID: 16708720 [PubMed - indexed for MEDLINE]

28: Moura SK, Pelizzaro A, Dal Bianco K, de Goes MF, Loguercio AD, Reis A, Grande RH. Does the acidity of self-etching primers affect bond strength and surface morphology of enamel? J Adhes Dent. 2006 Apr;8(2):75-83. PMID: 16708718 [PubMed - indexed for MEDLINE]

29: Kenshima S, Francci C, Reis A, Loguercio AD, Filho LE. Conditioning effect on dentin, resin tags and hybrid layer of different acidity self-etch adhesives applied to thick and thin smear layer. J Dent. 2006 Nov;34(10):775-83. Epub 2006 Apr 18. PMID: 16621219 [PubMed - indexed for MEDLINE]

30: Zhou LJ, Hu BH. [Effect of acid etching time on bonding interface of non-carious cervical sclerotic dentin] Beijing Da Xue Xue Bao. 2006 Apr 18;38(2):204-6. Chinese. PMID: 16617368 [PubMed - in process]

31: Maurin JC, Lagneau C, Durand M, Lissac M, Seux D. Tensile and shear bond strength evaluation of a total-etch three-step and two self-etching one-step dentin bonding systems. J Adhes Dent. 2006 Feb;8(1):27-30. PMID: 16536341 [PubMed - indexed for MEDLINE]

32: Owens BM, Johnson WW, Harris EF. Marginal permeability of self-etch and total etch adhesive systems. Oper Dent. 2006 Jan-Feb;31(1):60-7. PMID: 16536195 [PubMed - indexed for MEDLINE]

33: Franco EB, Lopes LG, D'Alpino PH, Pereira JC. Influence of pH of different adhesive systems on the polymerization of a chemically cured composite resin. Braz Dent J. 2005;16(2):107-11. PMID: 16475603 [PubMed - indexed for MEDLINE]

34: Brackett MG, Brackett WW, Haisch LD. Microleakage of Class V resin composites placed using self-etching resins: effect of prior enamel etching. Quintessence Int. 2006 Feb;37(2):109-13. PMID: 16475372 [PubMed - indexed for MEDLINE]

35: Valandro LF, Filho OD, Valera MC, de Araujo MA. The effect of adhesive systems on the pullout strength of a fiberglass-reinforced composite post system in bovine teeth. J Adhes Dent. 2005 Winter;7(4):331-6. PMID: 16430015 [PubMed - indexed for MEDLINE]

36: Owens BM, Johnson WW. Effect of insertion technique and adhesive system on microleakage of Class V resin composite restorations. J Adhes Dent. 2005 Winter;7(4):303-8. PMID: 16430011 [PubMed - indexed for MEDLINE]

37: Sadek FT, Goracci C, Cardoso PE, Tay FR, Ferrari M. Microtensile bond strength of current dentin adhesives measured immediately and 24 hours after application. J Adhes Dent. 2005 Winter;7(4):297-302. PMID: 16430010 [PubMed - indexed for MEDLINE]

38: Cunha LG, Alonso RC, Sobrinho LC, Sinhoreti MA. Effect of resin liners and photoactivation methods on the shrinkage stress of a resin composite.\ J Esthet Restor Dent. 2006;18(1):29-36; discussion 36-7. PMID: 16426507 [PubMed - indexed for MEDLINE]

39: Malacarne J, Carvalho RM, de Goes MF, Svizero N, Pashley DH, Tay FR, Yiu CK, Carrilho MR. Water sorption/solubility of dental adhesive resins. Dent Mater. 2006 Oct;22(10):973-80. Epub 2006 Jan 6. PMID: 16405987 [PubMed - indexed for MEDLINE]

40: Brackett WW, Ito S, Tay FR, Haisch LD, Pashley DH. Microtensile dentin bond strength of self-etching resins: effect of a hydrophobic layer. Oper Dent. 2005 Nov Dec;30(6):733-8. PMID: 16382596 [PubMed - indexed for MEDLINE]

41: Ogliari FA, de Sordi ML, Ceschi MA, Petzhold CL, Demarco FF, Piva E. 2,3 Epithiopropyl methacrylate as functionalized monomer in a dental adhesive. J Dent. 2006 Aug;34(7):472-7. Epub 2005 Dec 13. PMID: 16356620 [PubMed - indexed for MEDLINE]

42: Rappelli G, Coccia E. Fiber-reinforced composite fixed partial denture to restore missing posterior teeth: a case report. J Contemp Dent Pract. 2005 Nov 15;6(4):168-77. PMID: 16299619 [PubMed - indexed for MEDLINE]

43: Rosin C, Arana-Chavez VE, Netto NG, Luz MA. Effects of cleaning agents on bond strength to dentin. Braz Oral Res. 2005 Apr-Jun;19(2):127-33. Epub 2005 Sep 8. PMID: 16292446 [PubMed - indexed for MEDLINE]

44: Witzel MF, Calheiros FC, Goncalves F, Kawano Y, Braga RR. Influence of photoactivation method on conversion, mechanical properties, degradation in ethanol and contraction stress of resin-based materials. J Dent. 2005 Oct;33(9):773-9. Epub 2005 Mar 31. PMID: 16199286 [PubMed - indexed for MEDLINE]

45: Luz MA, Arana-Chavez VE, Netto NG. Scanning electron microscopy examination of 3 different adhesive systems. Quintessence Int. 2005 Oct;36(9):687-94. PMID: 16163871 [PubMed - indexed for MEDLINE]

Medline: 515 Referências

Scotchbond Multi-Uso PlusThe Gold Standard

Page 4: 1 Adesivos 3M ESPE. 2 1997 Single Bond 1999 Prompt L-Pop 2002 Adper Prompt L-Pop 2004 Adper Single Bond 2 (nanopartículas) 2008 Adper SE Plus e Adper.

Adper™ SE PlusAdesivo Autocondicionante

Page 5: 1 Adesivos 3M ESPE. 2 1997 Single Bond 1999 Prompt L-Pop 2002 Adper Prompt L-Pop 2004 Adper Single Bond 2 (nanopartículas) 2008 Adper SE Plus e Adper.

Adper™ SE Plus: Mudança de cor indicando uma correta aplicação e ativação. Autocondicionante proporcionando um menor rísco de sensibilidade

pós-operatória. Radiopaco (devido a nanopartículas de zircônia) Resistência de união equivalente aos adesivos de 5ª e 6ª geração

existentes. Baixo pH (<1.0) e excelente estabilidade sem refrigeração. Camada Hidrófoba (como no Scotchbond Multi-Uso) Espessura de película inferior a 20 micrometros.

Page 6: 1 Adesivos 3M ESPE. 2 1997 Single Bond 1999 Prompt L-Pop 2002 Adper Prompt L-Pop 2004 Adper Single Bond 2 (nanopartículas) 2008 Adper SE Plus e Adper.

Adper™ SE Plus: Indicações

Resinas Compostas diretas e Compômeros. Reparo intraoral de porcelana, resinas e metal

usando resinas compostas diretas. Dessensibilização de dentes hipersensíveis;

dessensibilização de raízes expostas.

Page 7: 1 Adesivos 3M ESPE. 2 1997 Single Bond 1999 Prompt L-Pop 2002 Adper Prompt L-Pop 2004 Adper Single Bond 2 (nanopartículas) 2008 Adper SE Plus e Adper.

Vantagens Práticas da Técnica de Mudança de Cor • Benefícios Técnicos

– Assegura a estabilidade do produto, pois a solução não é ativada até a mistura dos dois componentes.

• Benefícios Clínicos– Apropriada aplicação– Camada hidrófoba para minimizar a nanoinfiltração.

Page 8: 1 Adesivos 3M ESPE. 2 1997 Single Bond 1999 Prompt L-Pop 2002 Adper Prompt L-Pop 2004 Adper Single Bond 2 (nanopartículas) 2008 Adper SE Plus e Adper.

A B

Primer (Solução aquosa)

– Água: ~80%– HEMA:

~20%– Corante

Rose Bengal – Surfactante

AdesivoResinas de

metacrilato(UDMA/TEGDMA/TMPTMA) HEMA Fosfato and MHP

(Componentes acídicos)Nanopartículas de zircônia

(20%)Fotoiniciadores

Page 9: 1 Adesivos 3M ESPE. 2 1997 Single Bond 1999 Prompt L-Pop 2002 Adper Prompt L-Pop 2004 Adper Single Bond 2 (nanopartículas) 2008 Adper SE Plus e Adper.

Considerações para o desenvolvimento de Adesivos Auto-condicionantes

Capacidade de condicionamento Estabilidade Química

Abordagens . . .

Ex: os adesivos de 5th

ou 7th geração

misturar os componentes antes do uso

separar os componentes ácidos

Aumentar o pH para obter estabilidadeLimita a capacidade de condicionamento

Adper™ SE Plus é um novo avanço para essa abordagem

Page 10: 1 Adesivos 3M ESPE. 2 1997 Single Bond 1999 Prompt L-Pop 2002 Adper Prompt L-Pop 2004 Adper Single Bond 2 (nanopartículas) 2008 Adper SE Plus e Adper.

Técnica Adper™ SE Plus Obs: Se o esmalte do dente não estiver preparado, é indicado o condicionamento ácido do esmalte com ácido fosfórico por 20 segundos.

Passo 1. Molhe o microbrush com o Líquido A

Passo 2. Aplique o líquido A à superfície dentária

Passo 3. Molhe o microbrush com o Líquido B e aplique ativamente sobre a superfície dentária por 20 seg

Paso 4. Seque por 10 seg

Passo 5. Aplique uma segunda camada de Líquido B sobre a superfície dentária

Passo 6. Seque com jato de ar e fotopolimerize por 10 seg

Page 11: 1 Adesivos 3M ESPE. 2 1997 Single Bond 1999 Prompt L-Pop 2002 Adper Prompt L-Pop 2004 Adper Single Bond 2 (nanopartículas) 2008 Adper SE Plus e Adper.

Aplicação Clínica do Adper SE Plus em Restauração Classe III

Dr. Jorge Perdigao and Dr. George Gomes

Page 12: 1 Adesivos 3M ESPE. 2 1997 Single Bond 1999 Prompt L-Pop 2002 Adper Prompt L-Pop 2004 Adper Single Bond 2 (nanopartículas) 2008 Adper SE Plus e Adper.

Dr. Jorge Perdigao and Dr. George Gomes

Aplicação Clínica do SE Plus em Restauração Classe III

Page 13: 1 Adesivos 3M ESPE. 2 1997 Single Bond 1999 Prompt L-Pop 2002 Adper Prompt L-Pop 2004 Adper Single Bond 2 (nanopartículas) 2008 Adper SE Plus e Adper.

Dr. Jorge Perdigao and Dr. George Gomes

Aplicação Clínica do SE Plus em Restauração Classe III

Page 14: 1 Adesivos 3M ESPE. 2 1997 Single Bond 1999 Prompt L-Pop 2002 Adper Prompt L-Pop 2004 Adper Single Bond 2 (nanopartículas) 2008 Adper SE Plus e Adper.

Dr. Jorge Perdigao and Dr. George Gomes

Aplicação Clínica do SE Plus em Restauração Classe III

Page 15: 1 Adesivos 3M ESPE. 2 1997 Single Bond 1999 Prompt L-Pop 2002 Adper Prompt L-Pop 2004 Adper Single Bond 2 (nanopartículas) 2008 Adper SE Plus e Adper.

Dr. Jorge Perdigao and Dr. George Gomes

Aplicação Clínica do SE Plus em Restauração Classe III

Page 16: 1 Adesivos 3M ESPE. 2 1997 Single Bond 1999 Prompt L-Pop 2002 Adper Prompt L-Pop 2004 Adper Single Bond 2 (nanopartículas) 2008 Adper SE Plus e Adper.

Filler Detail

Professor Bart Van Meerbeek et al., BIOMAT KULeuven

Original magnification 12,000x

Adper™ SE Plus usa a nanotecnologia desenvolvida primeiramente para Filtek™ Supreme Restaurador Universal.

Composição da carga: Nanopartículas de zircônia.Conteúdo de Carga: Aproximadamente 20% em peso

Cortesia do Professor Bart Van Meerbeek et al.,

Page 17: 1 Adesivos 3M ESPE. 2 1997 Single Bond 1999 Prompt L-Pop 2002 Adper Prompt L-Pop 2004 Adper Single Bond 2 (nanopartículas) 2008 Adper SE Plus e Adper.

Radiopacidade

• As nanopartículas de zircônia promovem a radiopacidade.• Radiopacidade endereça a preocupação que a espessura de

adesivo empoçado poderia ser mal diagnosticado como cárie secundária

Áreas Radiolúcidas Sem áreas

radiolúcidas

Clearfil™ SE Adper™ SE Plus

Scotchbond™ SE: Margin

Clearfil™ SE: Margin

Estudo in vitro Adesivo intencionalmente empoçado como mostrado na figura

Ainda com excessivo empoçamento, Adper SE Plus não é visível nas radiografias

Dr. Jorge Perdigao

Page 18: 1 Adesivos 3M ESPE. 2 1997 Single Bond 1999 Prompt L-Pop 2002 Adper Prompt L-Pop 2004 Adper Single Bond 2 (nanopartículas) 2008 Adper SE Plus e Adper.

Resistência de união ao cisalhamento no esmalte

Burgess et al

0

10

20

30

Adper™Scotchbond™ SE

Clearfil™ S3Bond

Adper™ SingleBond Plus

Clearfil™ SEBond

MPa

0

10

20

30

Adper™Scotchbond™ SE

Clearfil™ S3Bond

Adper™ SingleBond Plus

Clearfil™ SEBond

MPa

Resistência de união ao cisalhamento à dentina

Page 19: 1 Adesivos 3M ESPE. 2 1997 Single Bond 1999 Prompt L-Pop 2002 Adper Prompt L-Pop 2004 Adper Single Bond 2 (nanopartículas) 2008 Adper SE Plus e Adper.

0

2

4

6

8

10

12

14

Scotchbond™ SE Single Bond Plus Clearfil™ SE

nano

leak

age;

%

Resultados de Nanoinfiltração: adesivos de 5ª e 6ª gerações

Perdigao et al 2007

(no nanoleakage recorded)

0

5

1015

20

25

30

3540

45

50

Dr. Powers Dr. Nara Dr. Burgess Dr. Dunn Dr. Pereira Dr. Pinzon

MP

a

Single Bond Plus

Clearfil™ SE

Scotchbond™ SE

Resistência de união à dentina: Dados de vários pesquisadores

diferentes

Page 20: 1 Adesivos 3M ESPE. 2 1997 Single Bond 1999 Prompt L-Pop 2002 Adper Prompt L-Pop 2004 Adper Single Bond 2 (nanopartículas) 2008 Adper SE Plus e Adper.

Adper SE Plus: Padrão de Condicionamento no Esmalte

pH do Adper SE Plus (após mistura do líquido A ao B): <1Outros produtos:

Clearfil SE: 1.4AdheSE: 2.0Touch &Bond: 2.3

Internal 3M ESPE SEM and pH Results

Page 21: 1 Adesivos 3M ESPE. 2 1997 Single Bond 1999 Prompt L-Pop 2002 Adper Prompt L-Pop 2004 Adper Single Bond 2 (nanopartículas) 2008 Adper SE Plus e Adper.

Dentina

Compósito

AdesivoCamada Híbrida

10 μm

Espessura de película do adesivo: menos do que 20 micrometros

Espessura da camada híbrida: 1-2 micrometros

Pereira et al