Active clinical trials for "Tooth Fractures"

Many patients suffer from badly decayed anterior teeth mostly in young age, causing esthetics and functional issues. This may be due to more than cause as fights, contact sports, accidents and falls. However; implant placement might not be the treatment of choice in some situations such as: medically compromised patients with absolute contraindications for implant placement or requiring extensive augmentation procedures, growing patients, patients with financial limitations, in addition to patients living in rural areas with no access for CBCT machines. Moreover, clinicians must be aware of cost-to-benefit ratios when attempting to recommend a specific treatment modality, especially in patients having financial limitations. Regarding the aforementioned conditions, surgical extrusion might be considered a cost-effective 'often overlooked' alternative compared to immediate single-tooth implant placement. Regarding healing time, cost, soft and hard tissue outcomes, surgical extrusion may be a good alternative yielding better soft tissue results as we preserve the natural tooth with the whole periodontium.

Many patients suffer from tooth substance loss as a result of fracture or decay of teeth situated in the esthetic zone. This might commonly occur with car accidents, sport injuries, falls or even fistfights. For those patients, most of the crown is lost and only the root remains, so there is no enough ferrule in order to restore the tooth with a crown. The most common treatment for those patients is immediate single-tooth implant. However, some problems may arise such as: high treatment expenses, the need for bone augmentation, the refill of the papilla to its normal position may be questionable in some implant cases, young growing patients, apprehensive patients, dental facilities and rural areas lacking cone beam computed tomography (CBCT) machines. Accordingly, orthodontic extrusion may be an alternative attempt to preserve the tooth by traction of the remaining root to create a sufficient ferrule effect to restore the tooth.

Dental restorations (crowns, inlays or onlays) can be made conventionally or by CAD/CAM. The current literature is weak and does not separate the medical results of these two techniques. However, the efficiencies enabled by CAD/CAM could, for the price of an initial investment, improve service to the patient by reducing the time required for these restorations, and possibly lower care costs. The aim of the study is to compare immediate medical results and short-term prosthetic restorations made conventionally or by CAD/CAM in randomized patients, and evaluate economic impacts and organizational aspects.

A total of 124 samples was calculated to be sufficient with G*power software ver 3.1.9.2 with effect size of 0.4 alpha probability error and power 0.95.With drop out estimate of 10% the final sample size decided was 140 samples. Patients reporting with complicated(pulp exposed or pulpally involved) horizontal crown root fracture with loss of crown structure in maxillary incisors and radiograph evidence of supra alveolar tooth structure are recruited for study. Informed consent from the patients or guardian as appropriate is obtained as suitable prior to treatment delivery. Exclusion criteria were:patients not willing for recall visits, root with evidence of cervical resorption or roor canal filling, open apices, patient with systemic ailments rendering root canal treatment, compromised periodontal health, vertical or horizontal root fracture. Pulpal condition of tooth was assessed using cold sensibility test(Neosnow, orikam health care Ltd, India.) amd confirmed upon access opening with teeth showing evidence of pulpal bleeding wad categorized as irreversible pulpitis and teeth with no evidence of pulpal bleeding categorized as necrotic pulp.

The aim of the study is to compare one-year clinical performance of indirect restoration fabricated from nano hybrid composite CAD CAM blocks and ceramic blocks

The aims of this clinical study are: To evaluate the clinical performance between indirect composite and ceramic laminate veneers: Main interests are: colour stability of the restoration (digital measurement in follow up) failure mode of the restoration wear of the restoration and antagonist Hypothesis: The colour stability of indirect composite restorations will not be different from the ceramic restorations. The indirect composite restorations will not be more prone to failure than the ceramic restorations. Antagonist wear and restorative material wear will be similar for both ceramic and composite. Material and Methods The laminates will be fabricated according to a specified protocol. In order to avoid possible noticeable differences in case of distinct levels of possible discoloration, a modified split mouth design is employed where the central incisors and the symmetric other teeth receive the same type of restoration. Randomization is based on the paired teeth and it is performed using the flip of a coin for the choice of material. Evaluation will be performed at baseline and at follow-up visits annually up to 2 years.

The most frequent reason for failure of laminate veneers made of glass ceramics (feldspathic, leucite based and lithium silicate based ceramics) was fracture of the ceramic, Therefore, ceramic materials that have higher fracture resistance, especially for patients suffering from abnormal occlusion, are needed.

Different types of post and core have been used for several years for restoring anterior endodontically treated teeth, but their preparations involve various risks such as: root perforation, root weakness and tooth fracture. The introduction of adhesive systems and conservative restorations, make it possible to reconstruct damaged anterior endodontically treated teeth with conservative restoration as endocrowns. The hypothesis of this trial is that E-max CAD endocrowns will show comparably equal clinical performance if compared to E-max CAD crowns retained with fiber reinforced composite post and core system when treating anterior endodontically treated teeth..

When restoring teeth with IPS Empress laminate veneers, fracture of restorations may occur. So, material with higher mechanical properties is required. Celtra Duo is a new material with glass ceramics infiltrated by 10% zirconia particles which increase the fracture resistance of the material.

Many techniques have been proposed to prevent or rather minimize the labial bone resorption following extraction including guided bone regeneration techniques that has been attempted for many years now to preserve the alveolar ridge dimensions . Immediate implant placement, flapless implant placement, palataly positioned implants and even platform switching. However none of these methods were able to completely preserve the coronal part of the facial bone wall, and since the main reason of bone loss following extraction is the loss of the periodontal ligament, it seemed logical that root retention may affect the resorption process,The reason the root retention technique works in its different applications is due to the maintenance of the periodontal attachment including cementum, periodontal ligaments and bundle bone, this principle was used by Hurzeler in 2010 in a technique called socket shied technique.