Scientific Articles - Dr.Mohammed Alfaifi

Amalgam

Amalgam: Is it safe as a dental restoration ? Dental amalgam is an alloy of mercury, silver, copper, and tin, which may also contain palladium, zinc, and other elements to improve handling characteristics and clinical performance. JPT9 Amalgam types based on copper concentration: Low copper ( 6% ) Silver, tin copper, zinc High copper (

Centric relation recording techniques

Centric relation recording techniques- A comparative investigation Kantor et al 1972. J. Prosthet. Dent Centric relation Maxillo-mandibular relationship, independent of tooth contact, in which the condyles articulate in the anterior-superior position against the posterior slopes of the articular eminences. JPT9 This paper studied at the different in what investigators report on an assessment of four

Edentulism and comorbid factors

Edentulism and comorbid factors Felton 2009. TheJPD, ACP World Health Organization databanks indicate that caries is still prevalent in the majority of countries internationally, with 100% In medicine, the term comorbidity relates to one or more disorders (diseases) in addition to the primary disorder or disease, or the effect such additional coexisting conditions might have

Clinical complications with implants and implant prostheses

Clinical complications with implants and implant prostheses Goodacre et al 2003. TheJPD All-ceramic crowns had the lowest incidence of complications (8%) Reviewing the literature from 1981 through 2001 The mean bone loss was 0.9 mm (range from 0.4 to 1.6 mm). The mean loss per year in subsequent years was 0.1 mm (range from 0

Tooth preparations for optimal success

Designing tooth preparations for optimal success. Goodacre 2004, Dent Clin N Am 1-Total occlusal convergence (TOC) : The angle formed between two opposing prepared axial surface 10-20 degrees posterior > anterior teeth Mandibular > maxillary teeth Fixed dental prosthesis > single crown If >20 degrees consider auxiliary features (grooves, boxes) 2- Occlusocervical/incisocervical dimension 3 mm

Maxillary Sinus Floor Elevation

Maxillary Sinus Floor Elevation: A Valuable Pre-prosthetic Procedure Bruggenkate et al, 1998 This paper describing Tatum’s “trap door” method of increasing the absolute bone height in the lateral maxilla. Technique involves surgically creating a top hinge door in the lateral sinus wall, turning the door inward and upward together with the intact sinus mucosa, and

Restorative space part 4 – Clinical considerations for increasing OVD

Clinical considerations for increasing occlusal vertical dimension: a review J Abduo , K Lyons 2012 Occlusal vertical dimension : The distance between two selected anatomic points. JPT9 Consequences of increasing the OVD Hyperactivity of the masticatory muscles Elevation in occlusal forces Bruxism Temporomandibular disorders (TMDs). Inter-occlusal rest space (IORS) of more than 2 mm indicates that

Restorative space part 3

Restorative space – horizontal components Lack of restorative space can be managed by crown lengthening with/without (endo, Post and core , crowns), increasing OVD, orthodontics /orthognathic surgery It is important to evaluate the occlusal vertical dimension before starting to plan for surgery or giving the options to the patient. Patient may not be able to

Restorative space part 2

Restorative space full arch – part 2 Vertical restorative space : Implant retained overdenture (Locators, bar, bar and locators), Implant supported fixed complete denture The available restorative space is measured from the implant prosthetic platform to the proposed incisal edge in the anterior region and occlusal plane in the posterior region and this space will

Restorative space

Restorative space – part 1 Vertical restorative space : Single screw/cemented implant supported crown, Implant supported fixed dental prosthesis screw/cemented Restorative Space definitions: Dental restorative space may be defined as the 3-dimensional oral space available for prosthodontic restoration. Ahuja et al, JPD 2011 The vertical distance between the maxillary and mandibular dentate or edentate arches.