Frequently Asked Questions

The angulation of a prosthetic component is very easy but some professionals might think it is fragile. What force (Ncm) is applied in the lever for the folding?

The force applied over the components varies due to the difference in their height. For example, the heigher the transmucosal height of a component, the lower will be the necessary force to encrue it. In relation to the quantification of that force, we can adopt the worst condition, in which a force of 1725N is necessary to damage the component, which is way above the maximum force applied to a single tooth of a healthy male adult, for a molar tooth (most critical condition), which is around 306N.

After carrying out the customization of an intermediate component (Arcsys Prosthetic Component), is it possible to refold it?

No. Once the crystalline configuration of the foldable prosthetic components is altered, it should not be rearranged again. Hardening is a plastic deformation that promotes the increase of the resistance force of non-ferrous alloys. The plastic modification of a hardened body (re-angulation) in either direction and in any degree, may cause microscopic fissures which may compromise the resistance of those components and lead to cracks and even fractures.

Are Morse Taper connections safe?

The Arcsys System has been designed to provide a pure frictional fitting that is compact and does not require a screw, which, many times, is the cause for the loosening or fracture of prosthetic components, due to the fatigue process from masticatory loads. The frictional concept offers more safety for the patient because the continuous forces of mastication, which maintain the implant/abutment connection secure, assure the retention of the prosthetic component into the implant. When compared to other connections it shows superior results.

What is the duration of Arcsys Drills?

Arcsys Drills, as well as in most systems, is approximately 20 perforations. There are innumerable variables such as bone density in patients and number of thermal cycles. It is important to replace drills before they lose their sharpness or their blades become inactive or deficient, so that they do not generate excess friction.

What factors have an influence in the activation (bracing of the implant/component set)?

Physical factors.Therefore, it is important to observe them to guarantee the passivity of the penetration of the component in the implant chamber. Possible factors:

1) Fragments inside the implant preventing the component to go all the way down. Solution: irrigate the interior of the implant under pressure and aspirate with an endodontic cannula (be especially careful when the implant installed is associated with gap filling).

2) Excess liquid (blood, saline solution) inside the implant. Solution: irrigate the interior of the implant with pressure and aspire with an endodontic cannula.

3) Correct selection of the transmucosal height, so that it allows for the component to go down to its final course inside the implant without interfering with the bone crests or soft tissues. Solution: adapt the transmucosal height to avoid pressure of soft tissues over the component and verify if there is passivity in the course of the component down the implant. If there is contact with the bone crest, it is necessary to ream the area to guarantee the passivity of the seating.

4) Activation of the Installation Device according to the instructions. Solution: align the device to the implant axle according to the use instructions, activate the trigger correctly (holding in the specified area) and apply at least three complete strokes.

5) Contact spots in the prosthetic portion forbidding the prosthesis/component set to go all the way down when placed together. Solution: check the contact spots of the prosthesis and alleviate if necessary. Check with the dental floss.

6) Occlusal adjustment (when there are no de-occlusion guides). Solution: adjust the anterior and lateral guides. In a case of light occlusion (MIH), the prosthesis should not show a mark with Accufilm. In forced occlusions, the prosthesis will show a light mark. That should be due to the absence of the periodontal ligament.

Does the use of drill stops with Arcsys Drills have an influence on irrigation?

No. The Arcsys System drills stops do not damage irrigation because FGM Drills have an exclusive design with deep side grooves that start before the place where the stops touch the drill, and, therefore, allow for the fluid to pass under the device and all along its extension.

How are prosthetic components activated? What is the necessary force for an ideal hold?

The activation is carried out through mechanical impact, by means of a proper tool. The implant installation device was designed to allow that activation to happen in an adequate way, providing safety for the user and the patient. The ideal hold achieved depends on the number of activations the professional applies to the prosthetic component. We recommend at least three (3) impacts, to allow for a reliable hold. The professional can complement the activation with more impacts and that does not damage the set.

Is it possible to refold a component that has already been customized?

NO. The structural modification of already encruated components will compromise the mechanical performance of those intermediate elements. That attitude may bring serious risks of catastrophic consequences (fracture) during the functional use of those elements. It is recommended that encruated components do not undergo any additional plastic deformation, even if in the same direction of the initial one.

If needed, how can the component-implant be reversed? What is the procedure? Are there any movements in the mouth that may make them loosen up?

Their removal is possible and safe, if the professional holds the component with its respective extracting wrench. All that is needed is to perform torsion and traction movements simultaneously (around 30N are enough for nulling the Morse Taper effect). It is important to assess the presence of para-functions (such as bruxism). In those cases, the occlusion needs to be adjusted according to the basic premises that generate them (freedom of excursive movements and selective touch during de-occlusion guides). There is no possibility of the component to loosen up during mastication, since the compressive direction favors even more the bracing of the components.

How can I remove temporary crowns from already activated components?

The removal of temporary crowns or multifunctional transfers such as caps has to be done only through traction, not rotation. In those situations, it will detach with a force weaker than 212N, the force needed to free the implant/component set after 3 impacts by the installation device.

How are prosthetic components activated? What is the necessary force for an ideal hold?

The activation is carried out through mechanical impact, by means of a proper tool. The implant installation device was designed to allow that activation to happen in an adequate way, providing safety for the user and the patient. The ideal hold achieved depends on the number of activations the professional applies to the prosthetic component. We recommend at least three (3) impacts to allow for a reliable hold. It is good to advise the patient of the procedure to avoid sudden unexpected behavior.

If needed, how can the component-implant be reversed? What is the procedure? Are there any movements in the mouth that may make them loosen up?

Their removal is possible and safe, if the professional holds the component with its respective extracting wrench. All that is needed is to perform torsion and traction movements simultaneously (around 30N are enough for nulling the Morse Taper effect). It is important to assess the presence of para-functions (such as bruxism). In those cases, the occlusion needs to be adjusted according to the basic premises that generate them (freedom of excursive movements and selective touch during de-occlusion guides). There is no possibility of the component to loosen up during mastication, since the compressive direction favors even more the bracing of the components.

Can the component turn durging the torque of the prosthetic screw?

Yes. That may occur in two specific situations: 1) if the force applied for the torque of the prosthetic screw surpasses 30N (The recommendation is 10N for the stabilization). 2) If the prosthetic component is sub-braced. In that case, it will not be fully activated, and its bracing may be reverted with a force weaker than 30N.

How does the integration between materials such as stainless steel and Grade V titanium happen?

The Brazilian standard ABNT NBR 16044 defines the general requirements for dental implants. It specifies several elements and, among them, the contact between materials of different chemical composition. The standard mentions another standard (ABNT ISO 21534), which defines that the combination of ASTM F138 stainless steel, to be used as the material for the manufacturing of the abutment, and of Ti6Al4V, used for the manufacturing of the implant, is considered adequate for the application, allowing it to be used without any problems. The setting promoted by the different materials promotes a contact area that is even more efficient in relation to connection airtightness and stability.

How is the interaction of stainless steel materials with grade V titanium like?

The standard ABNT NBR 16044:2012 defines the general requirements for dental implants. It specifies several elements and, among them, the contact between materials of different chemical composition. That standard mentions another (ABNT ISO 21534), which defines that the combination of stainless steel ASTM F138-13a (used as a manufacturing material for intermediate pieces) and of Ti6Al4V (used in the manufacture of implants) is considered acceptable for the application, and can be used without problems. It is worth mentioning that most of the competition already works with chemical-mechanical divergence between the alloys used in the implants (G4) and components (G5). The wear between the faces will exist when both are in diverging movemements, which does not occur due to the rigid indexation promoted by the reliability of the machining process. You can follow the article that validates the safety and resistance of the connection at the link below: https://goo.gl/gGMwBb

What is the the duration of the o-ring of Overdenture prosthesis?

Usually six months. The life of those devices is directly associated to the distance of the installation between implants, to the parallelism achieved between them (The recommendation is for up to six degrees) and the mucosal area that will stand the basculant movement, helping the distribution of the load during mastication. Other factors such as the patient’s craniofacial profile, the muscular standard, the presence of para-functions, occlusion and de-occlusion guides should also be considered.

What material is used for the manufacturing of the Implant Cover? Are there advantages over metallic screws?

FGM Implant Covers are manufactured in unrestricted use medical grade silicone. The material, for presenting elasticity and low hardness. adapts well over the implant without harming the adjacent tissues. The silicone cover presents advantages in relation to traditional covers specially for making the installation and removal processes much simpler and faster. It prevents bone growth over its superior region, so as to facilitate reopening and adaptation/activation of the prosthetic component. Moreover, one of its main advantages refers to the fact that it remains firmly adhered to its inserter tool or extractor, providing safety and agility in the process of implant buffering.

What is the behavior of the component (stainless steel) in relation to the interaction with tissues?

Although it is unprecedented in implantology, the alloy used is implatable and has been used for a long time in the medical area in implants, exactly because of its adequate biological response to tissues. This fact is evidenced by the United States standard ASTM F138-13a.

How is the interaction of stainless steel materials with grade V titanium like?

The standard ABNT NBR 16044:2012 defines the general requirements for dental implants. It specifies several elements and, among them, the contact between materials of different chemical composition. That standard mentions another (ABNT ISO 21534), which defines that the combination of stainless steel ASTM F138-13a (used as a manufacturing material for intermediate pieces) and of Ti6Al4V (used in the manufacture of implants) is considered acceptable for the application, and can be used without problems. It is worth mentioning that most of the competition already works with chemical-mechanical divergence between the alloys used in the implants (G4) and components (G5). The wear between the faces will exist when both are in diverging movemements, which does not occur due to the rigid indexation promoted by the reliability of the machining process. You can follow the article that validates the safety and resistance of the connection at the link below: https://goo.gl/gGMwBb

What are the advantages in relation to other platforms such as EH and IH?

In the pure Morse Taper systems, the pressure exerted for the locking of the abutment into the implant generates a frictional resistance that is enough for a safe connection, and, if correctly braced, eliminates the risk of eventual loosening of the component. Besides, it adds to the performance of the implant/abutment set in the long term, differently from what happens to implants with hexagonal connections. Another important issue for the longevity of the frictional system is the resistance to bacterial infiltration and colonization around the peri-implant interface. The micro moving and the proximity of the prosthetic portion to peri-implant tissues (hexagonal implants) allow for microbial accumulation, which may lead to a peri-implantitis, with the risk of losing the implant. Considering the information above, according to several studies published, the sealing promoted by the Morse Taper connection has demonstrated to be hermetical in relation to bacterial infiltration.