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PONTICS

PONTICS. A fixed dental prosthesis which cannot be removed by the patient ABTUMENT : The tooth which support the bridge or part of the bridge and to which the retainer is cemented. ABTUMENTs. Retainer. is that part of the bridge which is cemented to the abutment tooth. retainer. PONTIC.

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PONTICS

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  1. PONTICS

  2. A fixed dental prosthesis which cannot be removed by the patient • ABTUMENT : • The tooth which support the bridge or part of the bridge and to which the retainer is cemented. ABTUMENTs

  3. Retainer. • is that part of the bridge which is cemented to the abutment tooth retainer

  4. PONTIC Pontics are the artificial teeth in a fixed partial prosthesis, that replace the lost natural teeth ,and restore function and appearance, usually fills the space previously occupied by the clinical crown. Its suspended between cast abutment restorations ,and attached to retainer by a rigid connectors pontic retainer

  5. Functions of the pontic 1-MASTICATION The Pontic provides hard surfaces against which food can be chewed by teeth in the opposing arch

  6. 2- SPEECH (PHONETICS) A space created by the loss of tooth alters the pattern of airflow making normal speech difficult. Pontic helps to restrict air passage through edentulous area to aid in the reestablishment of normal sounds

  7. 3-MAINTENANCE OF TOOTH RELATIONSHIP when missing teeth are not replaced, the teeth posterior to edentulous areas can move forward from their normal position , its also possible for teeth anterior to and opposing edentulous spaces to drift distally and occlusally into open area. .

  8. 4- ESTHETICS (APPEARANCE) Dental esthetics affects personal appearance , the presence of a full complement of teeth with a natural appearance is important to an individual's self image Pontics , fill in the empty spaces that would be observed during talking and smiling, provide support for lips and cheeks to allow normal facial form. Pontic space

  9. The requirements of a pontic • 1- Provide esthetics and comfort • 2- Restore function • 3- Biologically acceptable • 4- Permit effective oral hygiene • 5- Preserve underlying residual mucosa

  10. RESIDUAL RIDGE CONTOUR • The edentulous edge's contour should evaluated carefully. The ridge should be smooth, regular and free of frenum attachment. • Loss of residual contour may lead to unaesthetic appearance and lead to food impaction.

  11. Classification of residual ridges • 1-Class I defects faciolingual loss of tissue width with normal height. • 2-Class II defects loss of ridge height with normal ridge width. • 3- Class III defects a combination of loss in both dimensions.

  12. Types of pontics Accordingto design According to material All metal All ceramic With Mucosal contact Without Mucosal contact All acrylic Metal-combination Metal-ceramic – metal-acrylic

  13. 1- Pontics with mucosal contact Divided to ; 1- saddle ridge- lap 2- modified ridge-lap

  14. 3- conical 4 - ovate

  15. 2-Without mucosal contact Sanitary (hygienic)

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