rp Flashcards

Question

altered cast technique is a ... . It involves creating a more .... representation of .... using.... technique

Answer 1

is a clinical and laboratory procedure used to modify the **master cast** for a removable partial denture (RPD) framework. It involves creating a more accurate representation of the edentulous ridge- selective impression technique to capture the supporting tissues under functional conditions. Technique helps ensure proper support under functional load.

Answer 2

full palatal coverage or spoon denture or every denture

Answer 3

loah chun fai man boob is REally enormous [in october] -load transmission through **longitudinal axis of tooth** -avoid Cervical impingement - avoid Food trap -maintain clasp-tooth rshp in proper position -bracing and IR -Provide positive **Reference seats in rebasing procedures -prevent Extrusion of unopposed tooth [improve occl] contacts**

Answer 4

red. Prominence prevent interference prevent tooth migration more Vertical loading more efficient support improve the fit aid in self cleansing

Answer 5

>6mm-Mx >3mm-Md

Answer 6

1 **Cross sectional shape of clasp**: A **round** section clasp will flex equally in all directions, whereas a **half round clasp** will **flex** more readily in the **horizontal than in the vertical plane** 2 **Thickness**: If the thickness is reduced by half, flexibility is increased by **8x** 3 **Length** of clasp arm o The longer the clasp arm, the more flexible. 4 **Material** used for clasp o Co-cr more rigid than wrought wire 5 **Design of clasp: Depth of undercut engaged and Direction of approach of clasp**

Answer 7

circumferential clasp arm [Acker's retentive Arm-wrought wire] arises from distal proximal plate. Indications:when the abutment teeth have exaggerated buccal or lingual tilts, a severe tissue undercut, or a shallow buccal vestibule. NOTE: Conventional cast C clasp that originates from disto‐occlusal rest and engages mesio‐facial undercut should not be used on FES

Answer 8

The positional relationship between the mandible and maxilla OVD: Establishing a occl- vertical dimension CR: Establishing a reproducible horizontal relationship with the mandible *These two components are interdependent; one cannot be changed without changing the other

Answer 9

its **physiologic/habitual rest position** pt sit comfortably in the upright position with the condyles in a **neutral unstrained** position in the glenoid fossa

Answer 10

intercuspal contact area; mandible occludes into centric relation or slightly anterior to it without varying the vertical dimension of occlusion

Answer 11

The angle at which the condyle descends along the articular eminences in the sagittal plane

Answer 12

Bodily lateral movement of the mandible towards the working side during lateral excursion. Important because it impacts the design of dental restorations, esp cusp inclines of posterior teeth and the arrangement of occlusal surface

Answer 13

Parallel to alar tragal line 􀁸 Parallel to inter-pupillary line o Canines and incisors at the occlusal plane o Laterals 1-2mm above occlusal plane midline- centre of face

Answer 14

if tooth is too divergent from path of insertion, CR will be grossly overcontoured+ unhygienic 􀁸 Changing path of insertion or uprighting the tooth orthodontically may be preferable

Answer 15

1. Maintenance of alveolar bone-allows fabrication of more stable; retentive dentures ensures comfort 2. Sensory feedback a. Tactile sensitivity discrimination -improved control of appliance 3. Reduction of psychological trauma

Answer 16

Kool liner cold cure autopolymerizing resin

Answer 17

1. Lingual plate 2. Lingual bar 3. Sublingual bar 4. Continuous bar 5. Labial bar

Answer 18

1. horse shoe 2. A-P palatal bar/strap 3. Ring 4. Palatal plate 5 Mid palatal bar/strap

Answer 19

soft tissues along the junction of the hard and soft palate on which pressure within the physiological limits of the tissues can be applied by a denture to aid in retention. bn ant and post vibrating line

Answer 20

imaginary line located at the junction of the attached tissues overlying the hard palate& the movable tissues of the immediately adj soft palate. Projection of the posterior nasal spine.

Answer 21

imaginary line at the junction of the aponeurosis of the tensor veli palatini muscle and muscular portion of the soft palate Represents the demarcation b/n the soft palate that has limited or shallow movement during function and the remainder of the soft palate that is markedly displaced during functional movements.

Answer 22

Represent ductal openings of the ducts of the surrounding mucous glands 􀁸 Vibrating line is ~2.62mm anterior to the fovea palatini

Answer 23

negative representation a static position recorded at the moment the impression material sets in

Answer 24

ZOE and light bodied elastomers)

Answer 25

lower the tray

Answer 26

Ensures that borders are not under-extended when impression material occupies space. Helps to ensure uniform thickness of material 􀁸 Lower: incisal region and pear shaped pads 􀁸 Upper: incisial region and post-dam area

Answer 27

**maxilla to the skull**, so that it can be transferred to an adjustable articulator

Answer 28

Lower MOElasticity and hence more resistance to chipping than porcelain.

Answer 29

Purpose: Determines the most retruded position of the mandible (centric relation, CR)-teeth set up. Attach adjustable pointer to maxillary block. scribing plate on Md block. creates arrowhead tracing on the plate. done intra-orally, extra-orally, or both methods. Not suitable for: Patients with flabby or flat ridges. Limited jaw movements due to joint pathology, muscle weakness, or neurological disorders. Insufficient inter-ridge space for device placement.

Answer 30

1 Muscular Forces of the lips, cheeks, and tongue acting on the polished surface of the dentures, indirectly affects the occlusal surface and manage denture stability during incising. 2 Physical Forces on impression surface of the denture. Relies on intact saliva film between the denture base and mucosa for suction. affected by i presence of a peripheral seal between mucosa and denture borders. ii Dependent on accurate fit of the denture. iii cm2 area of coverage 3 retentive u/c -labial undercut [not force*]

Answer 31

1Patient's Skills adaptability 2 Denture Design: i Polished surfaces shaped to converge occlusally, allowing muscle forces to seat the dentures eg buccinators muscle acts on the buccal flange. ii Consideration of the neutral zone where least displacement forces act on the denture. iiiCorrect denture extensions to ensure unimpeded muscular movements. iv Active fixation during function; passive during rest.

Answer 32

Presence of teeth: functional movements of the mandible conform to a pattern Absence of teeth: mandible is capable of a wide range of motion limited by the ligaments of the joints

Answer 33

1RCP (Retruded Contact Position): anterior-superior position against the slopes of the articular eminences. This position is independent of tooth contact. 2ICP (Intercuspal Position): The position where the upper and lower teeth is in MI 3Pr (Protrusion Maximum): The furthest point the lower jaw can move forward. 4**R (Rotational Position): Maximum opening of the mandible without anterior or inferior translation** of the condyle. 5**T (Translation Opening): Maximum opening of the mandible with full anterior and inferior translation of the condyle.** Significance: The envelope outlines all possible movements within the jaw’s range, important for diagnosing/determining the limits of mandibular movement for prosthetic designs tx planning and assessing TMJ health

Answer 34

too small OVD too large [RVD-OVD= fws]

Answer 35

too little OVD

Answer 36

1 Patient not guided to habitual position 2 Guarding action of the patient 3 Recording block slipping and not stable 4 Heels of record block prematurely contacting 5 Wax not evenly softened on both sides during recording 6 Occlusal rim not fitting properly on master cast

Answer 37

If adjustable articulator used – then a facebow record will be required, to transfer

Answer 38

deep nasio-labial grooves About 90-120 degree ; larger in patients with Class III incisor relationship (broader faced) and smaller in those with Class II relationship (narrower faced)

Answer 39

1 Incisive Papilla : About 8-10mm anterior from the center of the incisive papilla to the most prominent labial surface of the upper central incisors. Note: Movement of the incisive papilla forward during premaxilla resorption. 2 Upper lip aligns with the incisal edge of the upper central incisors at rest and lower lip -smiling 3 Linear Gingival Margin Remnants appear as chord-like elevations near the crest of the ridge aid in tooth positioning. 4 Mucobuccal Fold: Lower teeth positioning should not extend beyond a plane perpendicular to the mucobuccal fold to ensure proper fit and function. 5 Reference old denture help to determine optimal placement in new setups.

Answer 40

neutral zone and phonetics

Answer 41

𝐵𝑎𝑙𝑎𝑛𝑐𝑒𝑑 𝑜𝑐𝑐𝑙𝑢𝑠𝑖𝑜𝑛 = Condylar guidance/ inclination[fixed] × Incisal Guidance / Compensating curve (AP curve) × Cuspal inclination × Occlusal plane inclination

Answer 42

Too low [shetty et al 2013]: inefficent mastication, tongue and cheek biting. -Overclosed inesthetic appearance appear more aged Too High: tongue cannot rest on the lingual cusps of the lower denture and prevent its displacement. This higher position of the tongue causes the floor of the mouth to raise/ altered tongue position, leading to loss of border seal, and higher tendency of food accumulation at buccal and lingual sulci.

Answer 43

verify VDO, FWS, CR Protrusion etc -interference- any balancing ramp to correct any post disclusion in anterior guidance PPS esthetics and phonetics mx replace wax rim and redo bite registration for retry in

Answer 44

BULL- check with HORSEshoe articulating ppr -only in working side lateral interference -trim upper buccal cusp-lingual incline trim lower lingual cusp- buccal incline https://www.facebook.com/dentalshotslon

Answer 45

1**Denture Base** **Stabilization** : placement of antero-posterior and mediolateral **compensating curves help provide non-working side contacts** in lateral excursions and protrusion (balanced articulation), which are intended to **aid stability, prevent tipping+dislodgement during function and prevent Christensen's phenomenon** (occurrence of a posterior open bite on mandibular protrusion), 2 **Retention** during function - minimize shifting, rocking, or tilting of the dentures, especially during lateral and protrusive movements. 3 **Prevention of Tissue Damage/sore spot** and for **Comfort** .- Reduces discomfort caused by uneven biting forces and prevents denture instability. Allows the patient to chew and speak confidently without the fear of dentures becoming loose. 4 **Efficient Mastication**: without causing instability of the dentures. 5 **Even Force Distribution:** across the supporting tissues and ridges. Reduces pressure points that can lead to ridge resorption, soft tissue irritation, or ulceration. 6**Minimization of Harmful Forces**= destructive lateral forces - during **parafunctional movements **such as bruxism (teeth grinding) and clenching. 7 **Preservation of Remaining Tissues**;eg edentulous ridges[reduces lateral stresses], musculature, and the temporomandibular joint (TMJ).

Answer 46

expel water - shrinks aBsorbs water- swlls

Answer 47

deepen fossa

Answer 48

reducing the interfering contact on one or other of the **supporting cusps**.-Bull's Law in Selective Grinding = a guiding principle to adjust occlusal contacts **without causing harm to cusp tips or functional surfaces to preserve mastification fx and maintain Vert dimension, for stability and proper occlusal relationships.** Buccal Upper and Lingual Lower Inclinations are adjusted during grinding. Functional cusps: Upper lingual cusps. Lower buccal cusps.

Answer 49

horizontal part of the ridge where effective support is available and displacement as the pressure from the bolus will cause the denture to slide forwards is prevented by 1 Reduce the number of teeth 2 Occlusal plane should not be higher than 2/3 of the retromolar pad height 3 No teeth to be placed on the retromolar slope

Answer 50

1. 33 deg 2. Usually <33deg ; around 22 deg 3 flat- no vertical component

Answer 51

Ideal: Perfect fit, no movement on application, smooth without /minimal undercuts. Issues: Pearls of acrylic, undercuts causing mucosal trauma. Testing: Use cotton rolls for spicules, PIP Pressure Indicating Paste - undercuts.

Answer 52

Ideal: Correct size and beveled edges. Issues: Inappropriate relief causing pressure areas. Testing: Tissue conditioner applications, use of PIP paste for relief adjustment.

Answer 53

Ideal: Borders conform to sulci depth and width, with correct extensions. Issues: overextension causing mucosal trauma, underextended borders-Insufficient coverage. Testing: occlusal loading test by biting on cotton roll for 2 mins+ palpation for pain.

Answer 54

Lower Anterior: not too far to prevent tongue space Lower Posterior: neutral zone Upper: Check against palatal gingival vestige and incisive papilla. Assessment: Use finger to determine denture region displacement on pressure.

Answer 55

Smoothness: Ensure smooth and contoured surfaces for comfort and easy plaque removal. overly thick peripheries limit space for the coronoid process-easy to dislodge on m/m Problem Areas: Too rough surfaces lead to mucosal irritation;

Answer 56

the smallest speaking space is around 1mm

Answer 57

1. Excessive Packing dt: Acrylic in advanced dough stage. Clinical Implication: Teeth forced into investing plaster. 2. Normal Packing Pressure break investing plaster: Cause: Porosity from incorrect powder:water ratio; inadequate thickness of plaster Clinical Implication: Teeth movement. 3. Pressure Release During Curing cycle- Flask halves separate dt Inadequate clamping. Clinical Implication: Increased vertical dimension. 4. Flash Resin Cause: Excessive resin not removed-trial closure. Clinical Implication: Increased vertical dimension.

Answer 58

Split Casts Technique Realign dentures with casts on articulator. = Incisal pin gap showing increased OVD. Injection-Molding Less inaccuracies compared to compression-molding

Answer 59

1. Slide from RCP to ICP Issue: Pain/ulceration lingual to lower anterior ridge. 2. Lack of Incisor Overjet (OJ) Issue: Pain/ulceration labial to lower anterior ridge. 3. Insufficient Freeway Space (FWS) Outcome: strained look, clicking sound, mastication inefficient 4. Cheek Biting (Linear Alba) Decreased VD: Excessive FWS leading to cheek biting. posterior teeth set too buccally+Lack of Horizontal Overjet->Buccal cusps nipping posterior cheeks. Inadequate Cheek Support-> Thin upper flange, , excessive buccal fat pad. 5. Lip Biting Decreased VD: FWS causing lips and angle of mouth to fall inward. Flange Shape: Insufficient support at the mouth corner. Tooth Positioning: Canines too far off the ridge, insufficient canine overjet. 6. Occlusal Plane Positioning Standard: Midpoint of retromolar pad.

Answer 60

1 Discomfort 2 Reassurance MOTOR skills acquisition 1/52-1month; not to be discouraged by any difficulties 3 consume non-sticky food; chew on both sides during the initial stages and gradual introduction of more challenging foods 4 Appearance may require a period of adaptation 5 Excessive salivation / difficulty in speaking initially 6 Handle Soreness: if considerable soreness, discontinue wearing. Wear a few hours before recall for accurate sore spot identification. 7 Nighttime CareRemove dentures at night to reduce trauma and allow cleansing by saliva. Benefits: Prevents plaque buildup; aids mucosal recovery, especially for those with thin, atrophic mucosa and reduced ability to reduce repair tissue 8 denture cleaning

Answer 61

1. Somatic Trigger: Tactile stimulation of soft palate, posterior tongue, fauces=Cold metal tray; Saliva accumulation; Airway obstruction during impressions. mx short impression setting time 2. Denture wearing. Overextension dental prosthesis. 3. Psychogenic: Nauseating Stimuli from sight, sound, odors, tastes or thought dt Previous negative experiences enhance gagging sensitivity. 4. Systemic Conditions affecting gastrointestinal tract and other body systems. Examples: Tobacco smoking leading to chronic mucosal irritation. Nasal obstructions and pharyngeal conditions.

Answer 62

1. Schedule impressions after light/no breakfast if the patient is prone to retching. 2. quick setting times. 3 Position patient upright with head tilted slightly downwards.Protect clothing with a waterproof napkin. Help patient relax. 4 . Impression Taking -Start with the lower impression to minimize throat contact. Encourage nasal breathing and counting during the process to relax the patient. Assure the patient about their ability to breathe; avoid showing impatience. 5 Position /Stabilize the patient’s head firmly. Direct the head downward and keep a receptacle handy for emergencies. ask pt to lift their legs to distract and relax them. 6. **Medication** Consider anesthetic sprays for mild cases. Use anti-emetics or sedatives for severe cases.

Answer 63

1. Retching 2. Intolerance to dentures 3. Pain and instability 4. Burning mouth syndrome 5. Speech disturbances 6. Swallowing and tongue soreness-deep flanges 7. Altered taste sensations-possibly lack of thermal conductivity

Answer 64

1) Lack of retention 2) Muscle imbalance 3) Occlusal imbalance 4) Inadequate support 5) psychological problems

Answer 65

1 Incisive papilla 2 Palatal gingival remnant 3 Labial support 4 Retromolar pads 5 facial midlines Pre-extraction records

Answer 66

1 Endocrine imbalance 2 Iron deficiency anemia 3 Vaginal /oral carriage of candida 4 Greater inclination to wear dentures at night

Answer 67

1. Denture plaque->Poor denture hygiene 2. **Candida** detected with PAS/ Gram stain. Reduced w oral Antifungals+Peridex daily m/w CHX Trauma to mucosa:- 3 Ill-fitting dentures/ Disharmonious occlusion 4 night time wear 5 Raised residual monomer

Answer 68

1 . Alkaline Peroxides (e.g., Polident) 2 Dilute Mineral Acids (Denclen pH 4,Dentilen (pH 3) 3 Alkaline NaOCl [milton 2% or richlor 1%] 4 Antimicrobial solutions

Answer 69

Composition: Sodium percarbonate and Potassium monopersulfate+ alkaline phosphate+ water, forming alkaline peroxide + releases oxygen bubbles for cleaning. Usage: Effective for light deposits and stains, not heavy staining or calculus. Benefits: Safe for acrylic resin and Co-Cr metals; . Cautions: Can cause whitening of soft denture materials; not recommended for tissue conditioners or silicones.

Answer 70

Composition: dilute Solutions of HCl with added colors and perfumes. Usage: Good for removing+softening inorganic deposits like calculus; requires brushing. Cautions: Can corrode Co-Cr dentures.

Answer 71

Composition: Solutions containing 2% hypochlorite Milton or 1% sodium hypochlorite (Richchlor Solution). Usage: Effective against tobacco and food stains; useful for removing heavy staining and plaque if soak >6hr. Benefits: Effective for denture stomatitis; extends the life of tissue conditioners. Cautions: May cause unpleasant odor and color loss in acrylic and soft silicone linings* but not affect softness/elasticity*; corrosive to Co-Cr.

Answer 72

Peridex oral rinse (CHX Gluconate)-0.12%/2% usage:powerful antimicrobial effect against most oral bacteria and Candida organism Staining of acrylic teeth with prolonged use

Answer 73

Complex condition in pts wearing complete maxillary denture opposing a mandibular bilateral distal extension partial denture resulting in Chronic occlusal trauma + significant alveolar resorption [premaxilla] + replaced with the fibrous tissue/flabby tissue; supraeruption of lower anteriors, 1 fibrous overgrowth of tissues in maxillary tuberosities, 2 resorption in mandibular distal extension area and 3 decreased vertical dimension of occlusion.

Answer 74

􀁸 Prevention of loss of posterior occlusion f/f; f/p / overdentures 􀁸 Avoidance of anterior hyperfunction by Set up the upper teeth with minimal overbite and increase the overjet -less stress on the anterior teeth Lower natural teeth: Selective grinding of high incisal edges /Occlusal plane adjustment [kiv elective rct] or Extraction of over-erupted teeth if it disrupts the occlusal plane to a marked degree 􀁸 bi-maxillary surgical prosthetic therapy w/ or w/o implant stabilization

Answer 75

Minimal pressure on soft tissues; captures mucosa in a passive state. Rationale: Maximizes comfort and minimizes irritation; ensures close adaptation denture to static tissues. Suitable for: fragile mucosa or significant residual ridge resorption Materials Used: Zinc oxide eugenol (ZOE), low viscosity alginates, impression plaster.

Answer 76

Impression under pressure; simulates stress during mastication load. Rationale: Distributes masticatory forces evenly; improves stability and retention during mastication. For robust, well-formed ridges; less common due to tissue damage risk. Materials Used: Higher viscosity alginates, elastomeric impression materials.

Answer 77

Hybrid [mucostatic and mucocompressive techniques] approach; applies pressure selectively to resilient areas [hard ridges] and avoiding pressure on soft, displaceable tissues. Rationale: Balances support and comfort; maximizes retention and minimizes trauma. KCI and II FES and mand arches[variation of tissue mobility while mx has firm masticatory mucosa for soft tissue support]. Materials Used: Light-bodied elastomeric materials / ZOE for soft tissues

Answer 78

Records soft tissues under functional conditions (speaking, chewing). Rationale: Enhances fit and comfort by capturing dynamic tissue interactions. for-ill-defined peripheral extension Materials Used: Custom trays, elastomeric impression materials.

Answer 79

1 Accurate detail capture and reproduction:depend on type of imp material and techniques for high precision. Ensure adequate flow and adaptation of material to reproduce undercuts, margins, and surface textures. 2 Tissue Health and Management Healthy Tissue: Ensure tissues are free of inflammation, bleeding, or trauma before taking impressions. Moisture Control: Maintain a dry field using suction/ cotton rolls. . 3 Patient Comfort and Cooperation Explain the procedure to the patient to reduce anxiety. Use a properly fitted impression tray to avoid discomfort or gagging. Ensure the patient is seated upright or in a comfortable position 4 . Selection of Impression Materials Choose the appropriate material based on: Procedure type (e.g., preliminary vs. final impression). Anatomical requirements (e.g., undercuts or deep sulci). Material properties (e.g., accuracy, elasticity, or viscosity). 5 Proper Tray Selection and Handling Select a tray that: Covers all relevant anatomical structures without overextension. Provides uniform material thickness between the tray and tissues. Ensure rigid tray stability to prevent distortion during removal. Stpps for even thickness of imp material. 6 Surface Preparation Tooth Preparation: Remove debris, plaque, or soft tissues interfering with impression accuracy. Use retraction cords if needed to expose margins for crown and bridge impressions. Soft Tissue Preparation: Check for movable tissue and provide adequate relief or support. 7 Material Handling and Placement Follow manufacturer instructions for mixing, working, and setting times. Load the material evenly into the tray to avoid air bubbles. Insert the tray carefully to prevent trapping air or displacing material. 8. Proper Seating and Removal of the Tray Insert the tray in a smooth, continuous motion to the correct position. Hold the tray firmly until the material sets. Remove the impression with a quick, controlled motion to minimize distortion. 9. Disinfection and Safety Disinfect impressions immediately after removal to prevent cross-contamination. Handle impressions with care to maintain accuracy. 10. Evaluation of the Impression Check for: Accurate reproduction of margins, anatomical structures, and occlusal surfaces. Absence of voids, bubbles, or tears. Adequate extension and proper coverage of the desired area.

Answer 80

1 Anatomical changes: Residual alveolar ridge resorption leads to a flat ridge->poor fit->loss of retention. Smaller bearing area of lower denture increases instability; reduction in Support. Pressure points lead to chronic irritation and ulceration. 2 Denture wear ->Occlusal Imbalance: causing inefficient mastication and discomfort. Decreased occlusal vertical dimension (OVD) affects masticatory efficiency and denture stability. 3 Material Fatigue: Deterioration or warping of denture materials over time affects fit and function. 4 Loss of Neuromuscular Control: Aging reduces the ability to stabilize dentures, especially the lower one. 5 Improper Denture Hygiene: Accumulation of plaque and food debris causes irritation and poor healing. 6 Underlying Medical Conditions: Conditions like xerostomia, diabetes, or nutritional deficiencies affect oral mucosa health.

Answer 81

1 Denture Relining/Rebase: Improve fit by adapting denture base to mucosa contours. 2 Soft Liners: Provide cushioning effect, alleviate discomfort, and distribute occlusal forces 3 Tissue Conditioning: Allow inflamed mucosa to heal before new impressions. 4 Occlusal Adjustment: Use horseshoe articulating paper and reduce ulcerations by ensuring even force distribution. 5 Patient Education: Proper denture hygiene and care to maintain oral tissue health and prolong denture life. 6 New Complete Dentures: if worn teeth 7 Implant-Supported Overdentures: 8 Bone Augmentation Procedures: 9 Therapeutic Management+ poig: Treat ulcerations with medications and dressings; manage systemic or local factors contributing to sensitivity or ulceration. Cutting food, soft diet, and denture fixatives to improve retention and stability during adaptation.

Answer 82

1Reduced Vertical Dimension (VD): Worn denture teeth lead to lower jaw forward posture [bite of convenience] and increased freeway space (FWS). Loss alv bone height over many years; smaller decrease in facial height (FH). 2 Lack of Posterior Support: Collapsed cheeks, inefficient mastication, and difficulty recording retruded contact position (RCP)-habit. 3Alveolar Bone Resorption: poor fit 4Neuromuscular Control Changes: 5 Material fatigue leads to instability and occlusal issues. 6 Lack of retention due to dry mucosa caused by factors such as drug therapy, radiotherapy, or salivary gland degeneration. -> lack of physical forces, adhesion, cohesion, sufficient surface tension and viscosity.

Answer 83

1 Assessment: Evaluate fit, extension, retention, stability, and occlusion of current dentures/denture wear. Occlusal Analysis: Assess occlusal scheme and mandibular posture for occlusion; verify occlusal vertical dimension (OVD). Evaluate appearance: lip support, teeth position, flange design. Radiographic assessment for orthognathic or implant placement. Create diagnostic study models with facebow records mounted on semi-adjustable articulators. 2Treatment Planning: Fabricate new dentures to address reduced VD and occlusal contacts. Take new impressions and records. Discuss treatment options, including specialist referral. Consider implant-supported overdentures for improved retention and stability. 3 Management: Occlusal Adjustment: Correct occlusal imbalance. PIPr paste - to remove sore spots; Cotton roll remove any acrylic spicule Reline or Rebase: Improve fit and stability of current dentures. Construct Replacement Dentures: Primary impressions with special trays. Accurate jaw relation records for alignment and function. Consider “long centric” occlusion for a comfortable forward movement without occlusal interference. Try-in step to assess occlusion and vertical dimension before final casting. Ensure proper teeth positioning and restoration of cheeks and lips.+ issue 4 Follow-Up and Patient Education: Educate on proper denture care and hygiene. Inform about the adjustment period for new dentures. Schedule continuous follow-up for occlusion and fit adjustments and address potential issues early.

Answer 84

1 Stable and Reproducible Position: CR is the most superior, unstrained position of the mandible in the glenoid fossa. Independent of tooth contact; considered stable and repeatable. 2Anatomically and Physiologically Stable: Provides a stable reference position crucial for predictable denture function. 3 Avoids TMJ Stress: Positions condyles in a neutral, unstrained position to prevent TMJ disorders. 4 Reduces Occlusal Errors: Organizes occlusion to minimize discrepancies, instability, and patient discomfort. 5 Enhances Masticatory Efficiency: 6 Aids in Phonetics: Optimizes inter-arch space for better phonetic capability and easier adaptation.

Answer 85

1 Reduced Vertical Dimension: Elderly patients with long-term denture use may have a protruding lower jaw posture [habit]. 2 neuromuscular disorders affect accurate recording. 3 Patient Anxiety or difficulty in achieving a comfortable retruded position. 4 Technical Factors: Improper use of face-bow, inaccurate occlusal rims, inadequate recording bases. 5 Physiological Factors: Changes in edentulous ridge, resorption patterns. 6Operator Skill: Inexperience or technique variability by the practitioner.

Answer 86

1 Clear Instructions: Give slow, clear instructions and ensure patient comfort. 2 Patient Education and Training: Educate and practice the maneuver with the patient to reduce variability. 3 Assessment of Vertical Dimension: Ensure adequate freeway space . 4 Proper Techniques and Tools: Use a face-bow, well-constructed occlusal rims, and stable recording bases. 5 Patient Guidance: Soften wax and gently guide the patient into a comfortable retruded position using methods like the Dawson bimanual jaw method. 6 Relaxation Techniques: Encourage relaxation to minimize muscle tension. 7 Multiple Recordings: Make multiple recordings for consistency; use the most repeatable position. 8 Occlusal Adjustment: Provide “long centric” occlusion to allow forward movement without interference. 9 Checking and Adjustments: Verify interocclusal record in the mouth before finalizing the denture base. 10 Continued Education and Practice: Regularly update knowledge and practice skills to accurately determine and record CR.

Answer 87

severely worn or damaged pink acrylic part while keeping the original teeth, essentially providing a new foundation for the denture

Answer 88

1 Inadequate Fit: Under-extension or ineffective border seal. Absence of post-dam or incomplete coverage of denture-bearing area. 2Alveolar Ridge Resorption over time leads to poor fit and retention. 3 Denture Wear and Tear: 4 Saliva Issues: Reduced viscosity and quantity of saliva.

Answer 89

Fit Phonetics Aesthetics Occlusion Pao!

Answer 90

1 Framework Try-In: Fit the metal framework of the RPD on the original master cast and in the patient's mouth to ensure proper fit and seating. 2 Functional Impression: Attach impression trays to the framework, and take an impression of the edentulous ridge using a selective impression material (e.g., light-body silicone after border moulding). 3 Cast Alteration: Section the master cast in the areas of the edentulous ridge. Replace the sectioned areas with the functional impression material, and pour new stone to create an altered cast by combining the altered cast with the original cast to ensure an accurate final model for the denture fabrication.

rp Flashcards

(115 cards)