Attachment-retained restorations

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OVERDENTURE TREATMENTTreatment planningIndications for overdenture treatment• An unfavorable jaw relation which makes treatment with a fixed bridgerestoration difficult• Esthetic problems, e.g. the need for lip support in the upper jaw• Phonetic problems due to loss of alveolar bone in the upper jaw• Patient dissatisfaction with removable denture due to oral irritations and/or loss of bone for denture fixation• A bridge option makes satisfactory oral hygiene impossible or extremelydifficult to achieve• Edentulous patients with a cleft palate• Economic constraintsContraindications for overdenture treatment• At least one implant in each quadrant cannot be achieved• Untreatable, prosthesis-related stomatitis• Certain general illnesses and forms of medication are relativecontraindications for implant treatment (e.g. osteoporosis, uncontrolleddiabetes, cortisone treatment, radiotherapy)Factors to considerFactors which govern the planning of the overdenture treatment are thenumber and length of the implants, together with quality and quantity of theanchoring bone tissue.In cases where there are three or more implants, greater accuracy isrequired in order to achieve proper distribution of loading on implants andmucosa.To ensure an optimal restorative treatment, make sure that the followingconditions are met:• Parallel implants• Rigid bar connector without large distances between implants• Appropriate length of extension bars, not too long• Adequate resilience of the mucosa. The mucosa should not be too soft• Provide an even load on the mucosa when the prosthesis is in functionCreating an overdentureCreating an attachment-retained overdenture can be made in differentways.1. Creating a complete new overdenture at the laboratory.2. When the existing denture is judged suitable for further function:– Laboratory conversion of an existing denture– Chairside retrofitting of an existing dentureImplants should be as parallelas possible to ensure optimalresults.Adjust the extension bars toappropriate length. Extensionbars should be short to avoidlever forces.6
OVERDENTURE TREATMENTAbutment selectionAbutments designed forattachment-retained restorationsIndication andintended useFeatures and benefitsPageLocator AbutmentTitanium• Non-splintedrestorations in themandible• Designed to accommodate the maximumdenture-baring area• Self-aligning design with exceptional durability• Available in multiple vertical height optionsstarting as low as 2.0 mm• Available in multiple retention options andreplaceable• Up to 40° angle correction8Ball AbutmentTitanium• Non-splinted restorationsin the mandible• Designed to accommodate the maximumdenture-bearing area• Eliminates wear on the implant ball abutmentand minimizes the need for maintenance• Available in multiple retention options andreplaceable1920º or 45º UniAbutmentTitanium• Splinted restorations inthe mandible/maxillain combination with abarNote: It iscontraindicated touse 45° UniAbutmentas the only supportfor restorations on 3implants or less. Forthese situations at leastone support should be a20°UniAbutment.• The design offers flexibility in the clinicalsituation for implants placed in non-parallelsituations by maintaining an axis of withdrawalfor implants converging or diverging up toangles of 90°• Available in 45° or 20° tapered top cones3020º or 45º Cresco Insertfrom a Cresco API kitTitanium• Splinted restorations inthe mandible/maxillain combination with abar• Cresco Precision Method corrects castingdistortions to help ensure a passive fit• Available in choice of alloy fabrication• Available in a convenient API kit(All Parts Included)• Framework screw holes can be angled upto 17°For moreinformationaboutCresco technique,see theCresco manual.7
Page 1 and 2: Attachment-retainedrestorationsClin
Page 3 and 4: ContentsClinical and laboratoryproc
Page 5: OVERDENTURE TREATMENTIntroductionIn
Page 9 and 10: LOCATOR ATTACHMENTLocator Core To
Page 11 and 12: LOCATOR ATTACHMENT-RETAINED OVERDE
Page 19 and 20: BALL ATTACHMENTComponents and instr
Page 21 and 22: BALL ATTACHMENT-RETAINED OVERDENTUR
Page 31 and 32: UNIABUTMENTInstallationAbutment sel
Page 33 and 34: UNIABUTMENTBar fabricationWorking m
Page 35 and 36: UNIABUTMENTBar fabricationInserting
Page 37 and 38: CLEANING AND STERILIZATION PROCEDUR
Page 40: Astra Tech BioManagement Complex A

Attachment-retained restorations

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