Root canal obturating materials for primary teeth

| April 15, 2012 | 0 Comments

Root canal obturating materials for primary teeth

Mostly used Root canal obturating materials are:

1.Camphorated parachlorophenol mixed with calcium hydroxide [CPC + Ca (OH)2]

2.CPC mixed with zinc oxide    3.Formocresol mixed with ZOE

4.Chlorhexidine mixed with ZOE                           5. Kri TM paste

6.Zinc oxide eugenol  7.Zinc oxide mixed with sterile water

8.Calcium hydroxide with sterile water  9. Vitapex TM

10.Frank’s paste                                    11.Maisto’s paste

12.Leonardo’s paste    Iodoform

13.Walkhoff paste

Ideal root canal obturating material for primary teeth

  1. Should not irritate the periapical tissues
  2. Should not coagulate any organic remnants in canal
  3. Should have a stable disinfecting power
  4.  Resorb at a similar rate as the primary root
  5. Should be easily inserted into root canal & removed easily if necessary
  6. Should not be soluble in water
  7. Should be radioopaque & not discolour the tooth
  8. Should adhere to the walls of the canal & should not shrink

ZOE PASTE

  • Most commonly used root canal filling material for primary teeth
  • Has bactericidal effect & decreases tooth pain
  • Overfilling causes a mild foreign body reaction
  •  Rate of resorption is slower than that of the primary tooth root

Ca(OH)2 PASTE

  • Generally not used in pulp treatment for primary teeth

IODOFORM (KRI) PASTE

  • Resorbs rapidly & has no undesirable effects on succedaneous teeth
  • Material extruded into periapical tissue is rapidly replaced by normal tissue
  • Has superior antimicrobial action
  • Does not set into hard mass & can be removed if re-treatment is required
  • Contains Iodoform 80.8%, Camphor 4.86%, Parachlorophenol  2.025%, Menthol 1.215%

GUTTA PERCHA

  • Is not  resorbable & so, is generally not used in pulp therapy for primary teeth
  • May be used only when succedaneous tooth bud is absent

VITAPEX   {  Ca(OH)2 + Iodoform }

  • Nearly ideal material for filling primary root canals
  • Mixture is easily applied
  • Resorbs at a slightly faster rate than the primary tooth root
  • Has no toxic effect on permanent successors
  • Is radioopaque

FRANK’S PASTE   {  Ca(OH)2 + CPC  }

  • Is well tolerated by the adjacent periapical tissue without any inflammation &  with  deposition of osteodentin

WALKHOFF  PASTE

  •    Is a mixture of parachlorophenol, camphor & menthol

MAISTO  PASTE

  • Contains    zinc oxide  14  gms, iodoform  42  gms, thymol  2   gms, chlorophenol,
  • camphor  3cc, lanolin  0.50 gms

COMPARISON OF MATERIALS USED FOR OBTURATION IN PRIMARY TEETH

PROPERTIES     ZOE   VITAPEX

KRI PASTE

Rate of resorption Slower than that of tooth root Slightly faster than that of tooth root Faster than that of tooth root
Toxicity None           None         None
Overfill resorption           Occurs          Occurs        Occurs
Antiseptic action          Present          Present           Present
Application             Easy
Adherence to canal wall           Good           Good         Good
Removal            Easy          Easy
Radioopacity    Radioopaque        Radioopaque     Radioopaque
Discoloration of tooth       None               None         None

 

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Category: Endodontic, Pediatric Dentistry

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