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Oro -dental Preparation
Sarween Abdulrahman Abdullah
BCH HMU
Higher diploma HMU
MSc. Pharmacology
Nottingham Trent University
2023-2024
Dentifrices :
vThey are therapeuto-mechanical aids meant for cleaning the teeth with the help of a
toothbrush.They are also employed for filling and polishing the teeth .
v prime function :assist the brush in cleaning the teeth addition of few specific substance like
fluoride and antiseptics can produce some additional benefits .
vActive ingredients : polishing agents abrasives Foaming agents wetting sweetening agents
flavoring agents preservative agents & some times therapeutic agents .
Types of Dentifrices
1.Tooth paste:
2.Tooth powder: The powder should be of a fineness which passes
through a 60
- mesh powder sieve.
3.Mouth wash
Types of mouth wash:
1. Plaque inhibiting :prevent dental diseases
2.Ante- gingivitis :prevent gum diseases
3.Flourides:designed to strengthen enamel preventing cavities or
repairing existing ones to some degree.
Side effect of Floride
1. Fluorosis : Floride induced tooth discoloration.
2.Mouth/gum irritation.
Desensitizing agent
• Dentine sensitivity: is the most common problem affecting thousands of people
all over the world which is characterized by pain that could be elicited by
mechanical chemical or thermal stimulie.
e.g. the patient experiences pain while eating specially hot and cold food sweet
or sour food or even sometimes while brushing the teeth
Deferent types of Obtundents
Obtundent Mechanism of action Properties
Silver nitrate acts primarily by precipitation
of dentinal proteins and
liberating acid.
disadvantage is that it stains
the dentine black. contact
with gum should be avoided.
Cresol protoplasmic poison
numbness is produced by
irritation
penetrability is relatively more.
Menthol act by initial stimulation
followed by paralyzing the
sensory nerve ending of the
dentine.
rapid action stains the
infected dentine.
Bleaching agents
Bleaching agents :are the chemical agents used to remove pigmentation of the teeth .They include:
1.Oxidising agents: like Sodium peroxide (50% aqueous solution) hydrogen peroxide H2O2
sodium perborate (NaBO3.H2O)used as bleaching & disinfectant agents.
2.Reducing agents: Like saturated solution of sodium thiosulphate) hyposulphate (which is used to
remove the superficial staining with silver) Ag (permanganate and iodine.
Mummifying agents
Mummifying agents: are substances used to harden and dry the tissues of the pulp and root canal .
This hardening makes the tissues resistant to infection and can maintain aseptic condition .This
treatment is essential when it is not possible to remove the pulp and the content of root canal
completely. E.g. Iodoform
Thank you

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Oro -dental Preparation.pdfsksjssjsjsssss

  • 1. Oro -dental Preparation Sarween Abdulrahman Abdullah BCH HMU Higher diploma HMU MSc. Pharmacology Nottingham Trent University 2023-2024
  • 2. Dentifrices : vThey are therapeuto-mechanical aids meant for cleaning the teeth with the help of a toothbrush.They are also employed for filling and polishing the teeth . v prime function :assist the brush in cleaning the teeth addition of few specific substance like fluoride and antiseptics can produce some additional benefits . vActive ingredients : polishing agents abrasives Foaming agents wetting sweetening agents flavoring agents preservative agents & some times therapeutic agents .
  • 3. Types of Dentifrices 1.Tooth paste: 2.Tooth powder: The powder should be of a fineness which passes through a 60 - mesh powder sieve.
  • 4. 3.Mouth wash Types of mouth wash: 1. Plaque inhibiting :prevent dental diseases 2.Ante- gingivitis :prevent gum diseases 3.Flourides:designed to strengthen enamel preventing cavities or repairing existing ones to some degree.
  • 5. Side effect of Floride 1. Fluorosis : Floride induced tooth discoloration. 2.Mouth/gum irritation.
  • 6.
  • 7. Desensitizing agent • Dentine sensitivity: is the most common problem affecting thousands of people all over the world which is characterized by pain that could be elicited by mechanical chemical or thermal stimulie. e.g. the patient experiences pain while eating specially hot and cold food sweet or sour food or even sometimes while brushing the teeth
  • 8. Deferent types of Obtundents Obtundent Mechanism of action Properties Silver nitrate acts primarily by precipitation of dentinal proteins and liberating acid. disadvantage is that it stains the dentine black. contact with gum should be avoided. Cresol protoplasmic poison numbness is produced by irritation penetrability is relatively more. Menthol act by initial stimulation followed by paralyzing the sensory nerve ending of the dentine. rapid action stains the infected dentine.
  • 9. Bleaching agents Bleaching agents :are the chemical agents used to remove pigmentation of the teeth .They include: 1.Oxidising agents: like Sodium peroxide (50% aqueous solution) hydrogen peroxide H2O2 sodium perborate (NaBO3.H2O)used as bleaching & disinfectant agents. 2.Reducing agents: Like saturated solution of sodium thiosulphate) hyposulphate (which is used to remove the superficial staining with silver) Ag (permanganate and iodine.
  • 10. Mummifying agents Mummifying agents: are substances used to harden and dry the tissues of the pulp and root canal . This hardening makes the tissues resistant to infection and can maintain aseptic condition .This treatment is essential when it is not possible to remove the pulp and the content of root canal completely. E.g. Iodoform