Download presentation
Presentation is loading. Please wait.
Published byJamison Rennels Modified over 10 years ago
1
Fabrication of a Co-Cr Precision Attachment in Association with a Zigomatic Implant Prepared and presented by Ruan S. de Jongh BTech: Dental Technology Student at Peninsula Technikon
2
Contents Patient history Background information Possible treatment plan Possible technical treatment plan Most suitable treatment option Treatment option of choice Laboratory procedures and final placement
3
Patient History 29 year old female 1974 – complained about swelling Tumour in right maxilla (Myxoma) Myxoma appeared 1 year earlier 2002 – Hemimaxillectomy From midline including 2.2 —1.8 Obturator made in 2002 by Ms Galloway 4 th year student in 2002 Started with this current case
4
Condition and background information Currently tumor is removed Patient’s maxillary right Tumour was benign Wearing obturator Patient in stable and ready for advancements.
5
Possible Treatment Plan Hollow-bulb obturator Already in existence Co-Cr precision attachment Osteotomy
6
Possible Technical Treatment Plan Cobalt chrome removable denture Surgery (R 14 000 = 3h) Anaesthetics = R 1 000 ph Specialist = R 1 000 ph Zigomatic implant ± R 8000 Fabrication of attachment bar ± R 1 000 Fabrication of Co-Cr appliance ± R 1 500 Total cost adding up to ± R16 500
7
Possible Technical Treatment Plan (continued) Private hospital Ward fee = R 500 p/day Total cost = R 205 Surgery = R 165 Ward fee = R 40 (1 month) I.D.S. pays for implant
8
Possible Technical Treatment Plan (continued) First visit Impression Surgery – placement of zigomatic implant Healing time (± 6 weeks) Second visit Impression with analog in place Construction of attachment bar
9
Possible Technical Treatment Plan (continued) Third visit Impression with attachment bar Co-Cr appliance is constructed Fourth visit Co-Cr appliance is placed With 1 st try-in Fifth visit Final placement of Co-Cr removable denture
10
Most Suitable Option Co-Cr precision attachment Implant support Improved stability compared to an obturator Patient is ideal candidate age benign tumour have retentive teeth
11
Treatment Option of Choice Cobalt-Chrome precision attachment Advantages Good aesthetics Very stable Reasonable cost Hygienic Superior strength 1 Disadvantages Movement during function Retention diminishes with use Fracture - porosity 1
12
Laboratory Procedures First Visit Cast of primary model Changes are notified 2
13
Laboratory Procedures (continued) Second Visit Final model cast with analogs Construction of Attachment Bar 2 Cast in Co-Cr Worked off and polished
14
Laboratory Procedures (continued) Second visit (continued) Plastic clips preferred (nylon)
15
Laboratory Procedures (continued) Third Visit Construction of Co-Cr Precision Attachment 1 Duplicated Co-Cr appliance constructed in wax Invested Cast Sprues removed Sandblasted Trimmed Polished
16
Laboratory Procedures (continued) Fourth Visit Placement of Co-Cr precision Attachment 1 st try-in OR Final placement
17
References 1.G. Jenkins, Precision attachments. Removable Partial Prostodontics, Ch 6, Moscow:Quintessence Publishing, 1999: 78-80. 2.University of Pennsylvania Health System. Advances in Head and Neck Reconstruction. 2002: 132-143 3.D. Henderson, Major and Minor Connectors, 6 th Ed. Removable Partial Dentures, Ch 4, Mosby Company, London. 1981: 20-39
18
Thank You! Special thanks to: Prof J.Morkel Dr P.van Zyl Ms Z.Nortje
Similar presentations
© 2025 SlidePlayer.com. Inc.
All rights reserved.