Postnatal Growth of the Nasomaxillary Complex
D. Dixon Andrew, A.N. Hoyte David, Ronning Olli in Fundamentals of Craniofacial Growth, 2017
One of the most striking features observed from the radiographs of the patient was the extremely fragile appearance of the facial skeleton and the very high degree of pneumatization. All sinuses containing air were extensive and contained within extremely thin walls. The nasal cavity was developed far beyond the normal range, except at its anterior apertures. Whether this was symptomatic of this type of dysplasia or traceable to a general weakening of the facial skeleton induced by the lack of normal dental function, is a question that must await further investigation (see the maxillary sinus). With these exceptions, the dimension of the head, i.e., cranium, cranial base, depth of face, and length of mandible, were all equal to or greater than small normal. Five sets of full upper and lower artificial dentures were designed, constructed, and delivered during this time. Each successive denture was larger and contained more and larger teeth to accommodate the increase in the size of the jaws (Figure 6.6).
Physiology of Swallowing
John C Watkinson, Raymond W Clarke, Terry M Jones, Vinidh Paleri, Nicholas White, Tim Woolford in Head & Neck Surgery Plastic Surgery, 2018
Presbyphagia is defined as normal age-related changes in swallowing in healthy adults. Sarcopenia is the term used to describe the age-related decrease in muscle mass, strength and coordination. As a consequence of this process, older people have generally weaker oral phase movements, including reduced tongue strength.69 Although still able to achieve adequate lingual pressures for swallowing, these pressures are generated more slowly than in younger people.70, 71 Loss of dentition is common, reducing the number of opposing dental units for biting and grinding. Ill-fitting dentures may further hamper the oral preparatory phase. Changes to smell and taste also occur as part of the ageing process, impacting on the pleasure of eating and appetite. The pharyngeal phase is often longer in duration, with prolonged hyolaryngeal excursion. The pharyngeal wall can thin over time, creating a larger vault at rest, consequently reducing maximal constriction and pharyngeal pressure generation.72–76 Sensory changes may account for a slower swallowing response time.70
Principles of Joint Prostheses
Verna Wright, Eric L. Radin in Mechanics of Human Joints, 2020
The polyethylene to polished metal articulation transmits load from one component to the other. The components must be firmly attached to the host skeletal system to transmit the loads associated with activity. Early in the experience of joint replacement, attachment by “carpentry” with screws, bolts, or wedging an implant was the norm. These implants sometimes became loose and caused patients pain (29,36). Charnley introduced self-curing acrylic resin, polymethyl methacrylate (PMMA), to joint replacement by using this material as grouting to hold arthroplasty components in place. PMMA is also commonly known as Lucite or plexiglass and has been used extensively in dentistry. [The material Charnleyinitially used was obtained from a dental supply house and colored red for use in dentures (37).]
Novel polymethyl methacrylate modified with metal methacrylate monomers: biological, physicomechanical, and optical properties
Published in Biofouling, 2022
Georgia Arla Cabrera Khader, Andressa da Silva Barboza, Juliana Silva Ribeiro, Monika Lamas Ferreira, Carlos Enrique Cuevás-Suarez, Evandro Piva, Rafael Guerra Lund
Polymethylmethacrylate (PMMA) is a material used for the manufacture of totally and partially removable dental prostheses (Zafar 2020). This material forms the dentures’ base and is suitable due to its physical properties, low cost, and easy handling (Moussa et al. 2016). In addition, it has ideal characteristics for oral use such as biocompatibility, aesthetics, good adhesion to prosthetic teeth, easy repair, and adequate physical and mechanical properties (Polychronakis et al. 2015). However, 72% of denture wearers have a pathology called denture stomatitis (Pachava et al. 2015). This condition is characterized by a multifactorial inflammation that may be associated with the accumulation of biofilm due to ill-fitting dentures, use of long-lasting prostheses, poor oral hygiene, xerostomia, and some systemic conditions, such as diabetes (Zoccolotti et al. 2018). It is worth mentioning that C. albicans, S. aureus, and S. mutans frequently colonize the oral mucous of denture wearers and this is more frequently observed in patients with denture stomatitis (Chopde et al. 2012).
The effect of a decontamination protocol on contaminated titanium dental implant surfaces with different surface topography in edentulous patients
Published in Acta Odontologica Scandinavica, 2019
Mohammad Alotaibi, Gary Moran, Brendan Grufferty, Stefan Renvert, Ioannis Polyzois
Care was taken not to contaminate the rough surface of the implant with the acrylic pro-base polymer or the liquid monomer. The implants were submerged enough so that they would not protrude from the denture and irritate the patient’s buccal mucosa. Any excess acrylic near the margin of the implants or the well was removed with a size 11 scalpel blade. A minute amount of super glue was used between the heads of the implants to ensure the implants were secured in place. Patients were then asked not to dip the denture in a disinfectant for 30 days. They were allowed to brush their denture using just water but not the specimens or the area around them. The implants were left in function for one month, allowing plaque to accumulate and become calcified. The patients were instructed to use the dentures as they would normally.
Oral health knowledge, attitude and practices among nurses in a tertiary care hospital in Bangalore, India: a cross-sectional survey
Published in Contemporary Nurse, 2019
Philcy Philip, Amy Villarosa, Anitha Gopinath, Carolin Elizabeth, Gift Norman, Ajesh George
Findings from this study highlighted that most nurses were aware of the importance of oral care for inpatients and the effect poor oral hygiene has on systemic health. This is an important finding as it reflects nurse’s awareness of their role as caregivers and the significance of mouth care in the overall care of the patient (Malkin, 2009). Despite this, similar to previous studies (Adams, 1996; Miller & Rubinstein, 1987; Pettit, McCann, Schneiderman, Farren, & Campbell, 2012), they lacked awareness regarding the care of dentures and common medications that impact on oral health. This is significant as both denture care and knowledge regarding medications that affect oral health are important aspects of nursing care (Binks, 2017). Knowledge regarding care of dentures is essential, as improper care and cleaning of such prostheses can increase risk of complications such as aspiration pneumonia (Grap, Munro, Elswick, Sessler, & Ward, 2004). Similarly, knowledge of medication that can alter saliva and risk of dental decay would enable the identification of individuals who are at a higher risk of oral diseases and inform their oral care requirements (Binks, 2017; Walsh, 2017).
Related Knowledge Centers
- Dental Implant
- Dental Prosthesis
- Fixed Prosthodontics
- Mandible
- Maxilla
- Mouth
- Tooth
- REMovable Partial Denture
- Complete Dentures
- Chewing