Dental Laboratories

www.rhondium.co.uk

Introducing OVC4 The cost-effective Band 3 crown/onlay system.

The One Visit Crown™ (OVC4) enables dentists to create anatomically correct, full coverage restorations in one appointment without the need for expensive CAD/CAM systems.

Finally, a cost-effective Band 3 crown/onlay single visit restorative system.

+ Save more natural tooth with minimally invasive preps + Do less large amalgams and more tooth coloured full coverage restorations+ No need for temporary crowns+ Meets the requirements for UK NHS Band 3+ Innovative clinical procedure is faster than traditional crown procedures (financially rewarding for the dentist and appreciated by patients)

Upgrade to Band 3 OVC4

Band 2 treatment

OVC4 laboratory advantages

Why the OVC4 is great for your practice

Two OVC4 restorations can be placed in the time it takes to do one traditional crown.

+ Is an affordable alternative for the private patient+ Is a clinically and aesthetically superior alternative to a large MODBL restoration

The One Visit Crown™ (OVC)+ Uncured sub-layer adapts to the prep while the heat-cured occlusal layer has great anatomy+ Custom-made for all posterior teeth+ Highly efficient technique+ Eliminates the need for temporary crowns and multiple appointments+ No CAD/CAM needed+ 73% zirconia filled hybrid-ceramic material - both top and bottom layer + Excellent aesthetics and blending + Strong yet flexible + Kind to opposing dentition+ High bond strengths + C-factor of 1 so shrinkage vectors are minimal

The McDonald Matrix Band™

+ Tofflemire-like tightness without the downsides+ Unique front-facing tightening mechanism for easy application and adjustments+ Tooth specific contouring - shaped for each tooth+ Does not impede working area

The OVC Wedge™

+ Allows you to build up a deep proximal box+ Anatomically correct surface follows the natural shape of the tooth+ Comes in a left and right shape for mesial or distal placement+ Two sizes - small (green) and large (blue)

Heat-cured occlusal layer

Uncured under layer

The OVC4 process - how it works

At the end of the patient consultation a quick PVS impression is taken of the tooth to be restored, PRIOR to tooth prepping.

Rhondium Dental Labs Service Delivery

Each OVC4 is delivered to your practice with the following:

+ Statement of customisation+ McDonald Matrix Band+ Blue or Green Wedges+ Custom created OVC4 onlay, delivered protected in proprietary light proof case

Impression sent to Rhondium Lab with com-pleted lab form. The customised crown/onlay is created, packaged and returned to the practice.

The OVC4 treatment is completed by the clinician in ONE appointment, usually in 30-45 minutes.

▶▶

Procedure and product

Components of the OVC4 system

Hex Stick tightening tool

Quick overview of the OVC4 procedure

Prep tooth, bevelling the margins for better bonding and shade blending.

Check occlusal clearance using the Occlusal Reduction Guide.

Place the McDonald Matrix Band, securing with wedges if needed.

Place the OVC into the band, removing any excess material.

Scan the QR code or visit www. rhondium.co.uk/ovc4-video

for a step-by-step training video.

Light cure and remove the band. Trim and polish the OVC4.

Take a fast-set impression at the consultation appointment of un-prepared tooth and send it to our lab. We will send you back a customised OVC4 with a heat-cured occlusal layer, and an uncured sub-layer, in a proprietary light-proof case with matrix band and wedges. See below for a brief overview of the technique.

OVC4 versus traditional crown/onlay patient visits

OVC4 Traditional crown/onlay

Patient consultation where OVC4 impression is taken - of un-prepared tooth Patient consultation

First and only visit: OVC4 placement (45 minutes)

First visit: Crown preparation, impression and temporary crown (60 minutes)

Second visit: Crown placement (30 minutes)

▶ ▶▶

Benefits of the OVC4

BeforeBefore

Before

Before

Before

AfterAfter

After

After

After

OVC4 is useful for many clinical situations

Instead of doing a large MODBL restorationWeakened teeth

Root canal treated teeth

Heavily broken down teeth

Cracked tooth syndrome

To improve the appearance of discoloured teeth

Before

→After

OVC4 ideal clinical uses

+ As a superior full coverage alternative to large MODBL fillings and weakened tooth structures+ As an affordable alternative to a traditional dental crown for private patients+ For patients who have previously deferred needed dental crown treatment+ Ideal after root canal treatment to prevent the risk of re-infection+ With the OVC4’s relative affordability - teeth with a hopeless prognosis where a traditional crown is not worth the investment

Band 3 OVC4 versus Band 2 restorations

Band 3 OVC4 versus traditional crowns

Revenue (band)

Time (minutes)

Product cost

Gross income

Hourly rate contribution

Revenue (band)

Time (minutes)

Product cost

Gross income

Hourly rate contribution

Revenue

Time (minutes)

Product cost

Gross income

Hourly rate contribution

£75

30

£20

£55

£110

£300

90

£50

£250

£167

£600

90

£50

£550

£367

£300

60

£79

£221

£221

£600

90

£158

£442

£295

£450+£450

90

£158

£742

£495

£300

45

£79

£221

£295

£192

£128 per hour

£192

£128 per hour

Filling

1 patient

1 patient

NHS Patients

Private Patients

Crown

Crown

OVC4

OVC4

OVC4

2 patients

2 patients

Gain

Gain

Slow Procedure Fast Procedure

Analysis excludes fixed overhead and disposable costs other than the product cost.

Financial benefits

OVC4 Independent Clinical AssessmentA New Zealand dentist has kindly disclosed his retrospective assessment of the OVC4 over four years.

0.0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0Failed due to OVC

Debonded and recemented

Repaired or polished

Assumed Sound

Sound

3-4 Years [91]2-3 years [106]1 -2 Years [134]< 1 Year [125]

100%

90%

80%

70%

60%

50%

40%

30%

20%

10%

0%< 1 Year [125] 1-2 Years [134] 2-3 Years [106] 3-4 Years [91]

Failed due to OVC4

Debonded and recemented

Repaired or polished

Assumed sound*

*Assumed sound reflects that this is a retrospective clinical audit where the dentist offered a five-year guarantee and it is assumed that the patient would return if they had a problem. These OVC’s have not been assessed.

Sound

Age of restoration [number of OVC4 restorations]

100%

10.4%

76.9% 64.8%

27.5%

2.2%3.3%2.2%

22.1%

1.0%

88.8%

0.7%

Perc

ent o

f cas

es

OVC4 Compressive Load Force to Destruction

In-h

ou

se testing

OVC4 Wear Testing

Rh

on

diu

m test m

etho

d in

accord

ance w

ith

the H

eintze m

etho

d (2

00

6).

Disclaimer: IPS eMax CAD (Ivoclar Vivadent), Filtek Supreme (3M), Lava Ultimate (3M) and Premise (Kerr) are not registered trademarks of Rhondium (UK) Limited.

Chewing simulation represented in years - 240,000 cycles = 1 year

Filtek Supreme Large MOD

1677

2934

3687

50225319

Kerr Premise Large MOD

IPS eMax Crown CAD

Lava Ultimate Crown

OVC4 Hybrid

Dep

th o

f Wea

r (m

m)

New

ton

s

Rhondium testing compared the incidence of micro-leakage at the tooth/OVC4 interface of 2 curing protocols - spot-curing followed by full occlusal curing versus full occlusal curing only. All restorations were subjected to 500 thermo-cycles (5°C to 55°C) and then immersed in dye for 48 hours. The teeth were then sectioned in multiple slices. Micro-leakage tests were conducted following the OVC4 direct procedure.

OVC4 Micro-leakage

Description Sample size

Occurrence of micro leakage

Spot curing for 5 seconds plus

full occlusal curing

5No evidence

of any leakage

Full occlusal curing only 5

No evidence of any

leakage

7000

6000

5000

4000

3000

2000

1000

0

1.0

0.8

0.6

0.4

0.2

0.05 10 15 20 25

Lithium Disilicate

Hybrid

Research data

Pat Pending, US9629693, US10080629

UK: 0800-680-0636 | IE: 1-800-817-177uklabs@rhondium.comwww.rhondium.co.uk

What our customers are saying

“This product will change restorative dentistry in a way no other product has done since I graduated dental school in 1989.” Dr. Ben Malabanan Jr Guam

“Having completed over 500 OVC’s, the OVC is a perfect solution between a composite filling and a full zirconia crown. Best of all it’s one visit and you get a strong result with good biomimetic properties that ties in well with fibre reinforced core material obtaining good aesthetics.” Dr. Richard Stallworthy New Zealand

“As dentists we seem to over complicate things. The OVC is outstandingly simple.” Dr. Terry Wong Australia

“A revolutionary single visit full crown procedure that does not require CAD/CAM. Every dentist should try this to see where this fits in their practice.” Dr. John Flucke United States of America

“I’ve had businessmen who are in the dental industry, patients of mine, get out of the chair look in the mirror and say ‘that is the holy grail of dentistry!’ and I just say ‘ah yeah pretty easy really’. People are amazed by them. I like them and they like them.” Dr. Keith Hoolihan New Zealand

“Typically after a treatment with the One Visit Crown, the first reaction I get from a patient is ‘oh, wow was that all?’ It’s pretty surprising for them to be able to get a crown procedure done in 40 to 50 minutes and then walk out of the clinic with a crown, they’re usually pretty ecstatic”. Dr. Sam Koh Australia

MA

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Dental Laboratories