Ivoclar Vivadent SR Phonares II User Manual

Phonares

Expressive esthetic denture teeth

Instructions

for Use

IntroductIon

The demands of patients with removable dentures continue to rise: more esthetics, more functionality.

Patients expect and require more than just having their basic oral functions (e.g. chewing efficiency) restored. Individualized esthetics plays an increasingly important role.

SR Phonares has been developed to fulfil these requirements.

Based on Nano-Hybrid Composite (NHC), SR Phonares denture teeth are particularly suitable for the demanding applications in removable dental prosthetics. The tooth moulds are shaped according to age-specific characteristics, allowing the fabrication of highly individualized dentures.

SR Phonares offers dental technicians, prosthodontists and dentists a new generation of denture teeth that are designed to optimally meet the requirements of today's patients. This documentation offers guidelines for the application of the SR Phonares II tooth lines, assisting users to achieve an optimum level of function and esthetics.

Anterior Tooth Moulds 4

Posterior Tooth Moulds 5

Layering Diagram 6

Composition 7

Indications 8

Processing Steps 9

Mould and Shade Selection 10

table of contents

Model Orientation 12

Model Analysis 13

Anterior Tooth Setup 14

Posterior Tooth Setup 18

Completion 26

Implant Prosthetics 32

General Information 38

VERS

ATU

anterIor teeth

Impressive esthetic qualities

• Unparalleled surface texture

User-friendly and convenient

• Easy setup of anterior teeth due to proximal “Set & Fit” design

• Enhanced “white esthetics” due to especially designed interdental closures

A range of tooth moulds designed to match the age and characteristics of the individual patient

• Two basic types

• Three different categories according to age-related characteristics

SOFT

YOUTHFUL

UNIVERSAL MATURE

BOLD

Lingual Typ

PosterIor teeth

SR Phonares II Lingual moulds offer the option of lingualized occlusion. This setup technique is particularly suitable for enhancing stability in removable denture prosthetics (e.g. implant prosthetics).

The SR Phonares II Typ moulds are the classic teeth suitable for universal application in partial, complete and hybrid dentures.

Lingualized occlusion Classic occlusion

layerIng dIagram

The SR Phonares II tooth line has set new standards in the esthetics of removable dental prosthetics.

The Nano-Hybrid Composite (NHC) is a distinguishing feature of SR Phonares II.

This new composite has been especially developed for use in removable dental prosthetics. The NHC material offers the following advantages:

• high resistance to wear

• high resistance to plaque build-up

• natural opalescence

• highly homogeneous nano structure

The lifelike shade effect and structure of the anterior and posterior teeth is achieved with 4 individually shaded layers. The dentin core and facial incisal consist of NHC material, which imparts both high wear resistance and natural looking esthetics to the teeth. The back incisal and neck are built up of PMMA layers to ensure an optimal and stress-free bond with conventional denture base materials.

Facial incisal Nano-Hybrid Composite Dentin core Nano-Hybrid Composite Neck PMMA Back incisal PMMA

nhc comPosItIon

UDMA matrix High-density silanized SiO Inorganically ﬁlled UDMA polymer Silanized SiO2 nanoparticles

PMMA clusters

NHC component Function Main advantage

UDMA (urethane dimethacrylate)

Matrix The UDMA matrix features a high degree of cross-

linking. The material structure offers high stability and high resistance to chemical attacks.

High-density silanized SiO

Filler 1 Inorganic fillers stiffen the matrix and increase the

material's hardness and resistance to abrasion. They also optimize the material's refractive index and therefore enhance the natural shade effect and opalescence.

Silanized SiO

nanoparticles Filler 2 Nanoscale surface-modified inorganic particles

re inforce the composite structure. The nanoscale pro perties arising from these particles are responsible for the formation of homogeneous contact surfaces. The result is a material that is very kind to opposing tooth structure.

Inorganically filled UDMA polymer

Filler 3 (iso filler)

Matrix-based pre-polymer particles help reduce polymerization shrinkage.

PMMA clusters Inclusions The inclusion of PMMA clusters in the composite struc-

ture reduces the affinity for plaque and discolouration.

IndIcatIons

Given their properties the SR Phonares II teeth are suitable for esthetically and functionally demanding restorations. The range of indications includes partial dentures, combination dentures, complete dentures, hybrid overdentures and implant-supported overdentures.

Complete dentures Partial dentures

Important notes

The following requirements should be met to ensure that the dentures function appropriately in the oral cavity in the long term: – Fabrication in the dental laboratory according to the principles of best practice – Application of dental materials according to the manufacturer's instructions. In particular,

denture teeth should not be excessively weakened as a result of adjustments by grinding.

– Planning and fabrication of the dentures should be performed in close collaboration with the

dentist.

– Dental technician and dentist should ensure a balanced occlusion and articulation.

The dentist should check the following points before beginning the treatment:

1. Does the patient belong to a risk group that generally may jeopardize the success of the treatment?

a. Are there signs of bruxism (patient's statements, tooth wear, masseter hypertrophy)? b. Are there signs of significantly increased masticatory forces?

2. What type of removable or partially removable restoration should be implemented?

All PMMA/composite-based denture teeth are suitable for tissue-supported and partial dentures

in patients that do not belong to any of the above risk groups.

Patients restored with implant-supported restorations have been shown to exert higher mastica-

tory forces than patients with tissue-supported dentures. The increase in these forces is related to the fact that implant-supported restorations are anchored in the bone and therefore lack the sensory receptive feedback necessary to control these forces. The heightened forces may lead to an increase in chipping in composite teeth.

It may therefore be indicated to use PMMA-based denture teeth for these patients. PMMA teeth

are less prone to chipping but show a significantly higher wear than composite teeth.

Prosthetics workflow

ProcessIng stePs

1st appointment

• Preliminary bite registration

• Initial impression-taking

2nd appointment

• Functional impression

• Registration

• Mould selection

• Shade selection

SR Phonares II:

• Shade selection

• Mould selection

3rd appointment

• Wax try-in

Dental practice

Dental laboratory

1st processing step

• Study model

• 1st model orientation

• Bite registration

• Customized impression tray

2nd processing step

• Model fabrication

• 2nd model orientation

• Model analysis

• Wax-up

SR Phonares II:

• Model orientation

• 2nd model analysis

• Anterior tooth setup

• Posterior tooth setup

4th appointment

• Placement

5th appointment

• Recall

The Biofunctional Prosthetic System (BPS®) stands for success in the field of removable dental prosthetics. This success is based on a systematic approach to the working procedures in the dental p ractice and laboratory. In addition to a processoriented workflow, the materials used in the fabrication of dentures are also decisive for success.

3rd processing step

• Completion

SR Phonares II:

• Bonding denture teeth to

denture base

• Surface conditioning

• Polishing / Finishing

Specific guidance on the use of the SR Phonares II teeth should be followed during application. These instructions are explained on the following pages and are complementary to the basic BPS working procedures. The basic BPS procedures are described in more detail in the BPS handbook.

mould and shade selectIon

FormSelector

Phonares

TO OT H M OU LD AR TI ST R Y

Anterior mould selection

In addition to the shade, the shape (form) and size of anterior teeth should in particular be matched to the individual characteristics of the patient. If possible, the anterior teeth should be selected directly on the patient according to the patient's anatomical and facial characteristics.

The following methods are recommended to facilitate the tooth selection procedure:

CHAIRSIDE

FormSelector

Step 1 Determine the interalar width of the

nose using the FacialMeter. Select an appropriately sized tooth mould from the INTER-ALA table.

Step 2 Select the desired tooth form, soft or bold,

in line with the patient's face.

LABSIDE

Model analysis

approx. 7 mm

approx. 9 mm

Determine the following reference points by means of analysing the model:

1] Position of the canines: Determine the first large pair of rugae; the centre

of the labial surface of the maxillary canine is positioned at a distance of 9 mm.

Step 3 Select the appropriate age group of the

teeth according to the incisal wear and facial curvature characteristics of the anterior teeth.

2] Contact point of the two central incisors: The labial surface of the central incisors is located

at a distance of approx. 7 mm from the centre of the incisive papilla.

Based on the length of the curve passing through these three reference points, you can select an anterior set of appropriate width by means of the tooth mould chart.

As guides for designing the prosthetic reconstruction it is

advisable to use previous models or photographs of the patient. In addition to the position of the teeth, the tooth shape can be adapted to the original appearance of the patient.

mould and shade selectIon

Anterior teeth – Mould selection

The maxillary anterior moulds offer a special advantage: They are grouped according to age-specific characteristics. To facilitate mould selection, the moulds are arranged in a logical order and labelled with an easily identifiable code.

– The first character (letter) represents shape: S = Soft B = Bold – The second character represents age group: 6 = youthful; 7 = universal; 8 = mature – The third character represents size: 1 = small; 2 = medium; 3 = large

S OFT

small

medium

large

Please refer to the SR Phonares II tooth mould chart for an accurately dimensioned representation of the moulds.

S61

S62

S63

YOUTHFUL UNIVERSAL MATURE

S71

S72

S73

S81

S82

S83

small

medium

large

B61

B62

B63

YOUTHFUL UNIVERSAL MATURE

BOLD

B71

B72

B73

Posterior mould selection

The size of the posterior teeth is selected in line with the anterior tooth moulds determined during the preceding stage. A variety of posterior tooth moulds are available to meet the specific requirements of individual indications and to provide patients with dentures that best satisfy their needs.

SR Phonares II Typ SR Phonares II Lingual

B81

B82

B83

The Typ moulds are the classic denture teeth for:

• Complete dentures

• Partial dentures

• Hybrid dentures

The Lingual moulds are designed for lingualized occlusion. They are suitable for universal application in dental prosthetics and offer particular advantages in implant-supported removable dentures where the lingualized occlusion scheme provides enhanced stability.

Shade selection

Shade selection should be performed on the patient under defined light conditions (5500K colour temperature) or in daylight. An accompanying shade guide is available to enable consistent shade selection in compliance with the A–D shade system. The tooth samples of the SR Phonares II shade guide feature the same layer structure and material as the original teeth. Shade deviations are therefore minimized. Shade selection may also be performed with an Ivoclar Vivadent A–D shade guide.

model orIentatIon

The transfer of the patient's specific jaw relations with the individually adjustable UTS 3D facebow is an essential step to achieve functionally effective dentures. The accessories of the Stratos articulator range also allow average-value mounting of the casts.

Average-value model orientation Individual model orientation

Use a horizontal guide to achieve average-value orientation of the mandibular cast to the articulator.

The Gnathometer M assists in the correct final recording of the relationship of the upper and lower jaw.

Utilize the UTS 3D transferbow for skull-related individual model orientation.

We recommend using a 2D or 2.5D template.

A 3D template should be used for the setup in conjunction with a skull-related model orientation.

NOTE

Ivoclar Vivadent recommends Centric Tray for a preliminary centric bite registration. This

method allows the occlusal rims to be ideally dimensioned in line with the patient-specific oral situation and to optimally place the bite pattern.

+ 28 hidden pages