As a partial denture, the mobile prosthesis is designed to replace one or more natural teeth or all teeth apart from one. They are the most common type of mobile prosthetic restorations and must be constructed not in the logic of a transition stage to the total denture, but with multiannual operation specifications in harmony with the stomatognathic system.

Oral preparation for a partial denture is the clinical procedure that precedes its manufacture and is intended to make the mouth able to accept the partial denture that will work in harmony with the mouth and fulfill its long-term manufacturing goals. With the preparation of the mouth, an oral condition is obtained free of any pathological damage, elimination of interference in the placement, removal and operation of the partial denture, but also a desired chewing plane and acceptable conjunctival shape.

Not prosthetic

(a) hard tissue surgery (removal of roots, cysts, embedded teeth, removal of teeth

obstruction, surgical arrangement of ridges)

(b) soft tissue surgery (removal of hyperplasia, intense bridles)

c) Orthodontic treatment

d) periodontal treatment

e) endodontic treatment

Prosthetic

a) restoration of support teeth (selective grinding, placement of fillings,

placement of crowns)

(b) teeth splinting

c) rehabilitation of the chewing level

Metal frame

• Saddles

• Teeth

• Dental support

• Mucosal support

• Mixed support

Clips

(rigid-atraumatic – do not injure – do not hold food-cover absolutely necessary surface)

• Grid

• Hooks-precision joints

They help retain (ability of the body to resist forces opposing its position of attachment), support (ability not to immerse in the underlying tissues during its operation) and stability (ability not to be displaced by horizontal forces during operation) into the mouth by applying to the selected teeth-supports.

They surround the tooth more than 180 degrees and less than 360 degrees

• Develop as little destructive forces as possible on the teeth

• In rest, they exercise no power on the teeth they apply, that is, they are full inactive

• Application to tooth surfaces is excellent and accurate

• They do not injure lips and tongue

• They cover the absolutely necessary surface of the tooth they apply

Mast:
small and strong arm that fits the chewing area of the tooth and carries
the pressures exerted during the operation of the p.d. parallel to its longitudinal axis
and prevents it from sinking without interfering with occlusion
• Buccal arm:
provides restraint
• Lingual bracket:
provides stabilization

Alternative for aesthetic reasons

• Micro-mechanical system of two functional parts that fit precisely with each other

• One part is attached to the crown of the natural tooth and the other part to the denture offering stability and restraint

Advantages of Precision Joints

• Excellent aesthetic result that creates better acceptance conditions for the patient

• Better containment of partial denture compared to the hooks

Disadvantages of precision links

• Higher cost

• Need to grind healthy teeth

• They transfer larger forces to the teeth

• Difficult as a procedure

• Difficulty in placement and removal by the patient

• Difficult repair

• High level of oral hygiene