Root canal obturating materials for primary teeth
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
- Should not irritate the periapical tissues
- Should not coagulate any organic remnants in canal
- Should have a stable disinfecting power
- Resorb at a similar rate as the primary root
- Should be easily inserted into root canal & removed easily if necessary
- Should not be soluble in water
- Should be radioopaque & not discolour the tooth
- 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 |
Category: Endodontic, Pediatric Dentistry