D4 Implant Final

Disadvantages of a pano: ____% horizontal and

vertical magnification - 25

Anatomic planes -

CBCT imaging helps with:

a. Predictability of implant placement

b. imaging of the entire arch \n c. ID bony pathology \n d. All of the above

D

a. Predictability of implant placement

b. imaging of the entire arch

c. ID bony pathology

d. All of the above - D

CBCT should be used to analyze all of the following except:

a. PA cyst

b. Endodontic pathology

c. Tooth anatomy

d. Fibroma - Fibroma

A \__________________-driven tx plan is created by placing implants in a n ideal relationship to the planned dental restorations and associated supporting bone - prosthetically

Software we use for implants - Invivo

For every 1mm. of palatal positioning, the implant should be placed an additional __mm apically - 1

Depth of implant: \____mm from adjacent CEJ

If implant is placed too deep\= - 3-4

black triangles

Biologic width\= 2.5-3.2mm

\>4mm\= - Challenging and insufficient for development

Insufficiently supported, long term soft tissue complications (deep pockets/recession)

The \_______ platform diameter that fits within the normal root contours should be selected.

The platform should be placed \___mm apically and \___mm lingually to the buccal emergence point. - largest

3,1

What is the key determinant for implant position? - Buccal CEJ or FGM

Presence of interdental papilla

Contact point to crest of bone:

5mm or less

6mm

\>\= 7mm - 100%

56%

27%

Buccal bone thickness- implants should be minimum - 1.5-2mm

Minimum distance between implants.

Between implant and tooth - 3mm

1.5mm

A carrier that transfers the pre-operative plan from a CBCT to the patient for the actual surgery - Digital surgical guide

To achieve an acceptable clinical outcome, the guide should be \________ driven - prosthetically

Conventionally, a \___________ was duplicated and used as a guide for implant placement. - waxed tooth

CAD CAM stands for - Computer aided design

Computer aided manufacture

Printing\= \___________ process

Milling\= \__________ process - additive

subtractive

Uses UV laser to polmerize the drops of resin to desired shape - Sterolithography

Applies drops of polymerizable polymer to the building platform - Triple injecting technology (Polyjet)

Uses a digital projector as a light source to polymerize the liquid resin layer by layer across the platform - Digital light processing (DLP)

Relatively new method uses projecting images in a continuous sequence - Continuous liquid interface production (CLIP)

Before using a surgical guide, what must you do? - Place and glue guide sleeves into the printed part and sterilizing in autoclave

\_______ guide:

2mm sleeves

Guides only the initial osteotomy

No guided kit needed - Pilot drill

Rests over the teeth

Can be used for long span and short span partially edentulous arches - Tooth supported guide

Rests on soft tissue

Used in fully edentulous cases.

Advantages: minimally invasive

Disadvantages: requires anchor pin fixation - Mucosa supported guide

Rests on patient's bone

Fully edentulous cases

Disadvantages: requires anchor pin fixation

**Invasive as the guide is fixed after elevation of mucosa - Bone supported guide

Rests on the bone after flap elevation

Window in the guide guides the level of bone reduction

Anatomage- offers for mandibular cases ONLY

Disadvantages: anchor pins need fixation, hence is invasive - Bone reduction guide

Can virtually extract the teeth

Adv: immediate ext and implant placement cases

Ext or FDP removal accompanied with implant placement. - Extraction guide

Supports zygomatic implants for full edentulous maxillary arches

Requires anchor pin fixation

Zygoma anatomy guided approach - Zygomatic guide

Has base fixation guide (similar to bone reduction guide)

All other guides fit on fixation guide for sequential exts and implant placement

Requires anchor pin fixation

Adv: fully guided, fully guided prosthetic reconstruction, used in DSD - Stackable guide

How close or far off a given set of measurements (observations or readings) are to their true value - Accuracy

How close or dispersed the measurements are to each other. - Precision

Assisted implant surgery showed high trueness and precision. The closer the sleeve to the bone, the more accurate - Static computer

Angulation deviation\- - no statistical difference among the 3 types of guides

Mean deviations between different types of guides were less than \____mm in any direction and less than \___ deg - 2

8

Higher accuracy at the implant head level. The discrepancy was magnified at the \_____ - apex

Are 3D printed surgical guides as accurate at milled? - Yes

Types of dynamic navigation - X-guide

Navident

Robodent

Most scanners are \________ type - non-contact

Set of data points in space, triangulated creating a 3D mesh surface model - Point clouds

Store 3D info as a list vertices joined by edges - OBJ File format

For single, short span sites the accuracy of intra. oral scanners is \____ - high