By J. Mannig. Bennett College.
The treatment of peri-implantitis includes among others the decontamination of the surface 9 exposed to the bioflm to eliminate infammation and to render the exposed surface biocom- patible buy cheap requip 2mg, with re-osseointegration as the ultimate goal best requip 1mg. Non-metal instruments and rubber cups were found to cause minimal or no damage to smooth implant surfaces 1mg requip overnight delivery. Similarly, non-metal instruments and air-abrasives were the instruments of choice for structured surfaces when maintenance of the surface integrity was required. Metal instruments and burs were recommended only in cases that required smoothing of the surface roughness. Whereas this review addressed in detail the issue of surface alterations, it still remains unclear how effective mechanical instruments are at cleaning contaminated titanium im- plant surfaces. Surface alterations may be of secondary interest if the means of instrumenta- tion prove to be ineffective in removing accretions. The search was conducted up to May, 2013 and was designed to include any published study that evaluated the effcacy of mechanical instruments on cleaning contaminated titanium 7 surfaces. All reference lists from the selected studies were manually searched by two reviewers (A. The papers that fulflled all of the selection criteria were processed for data extraction. After a preliminary evaluation of the selected pa- pers, considerable heterogeneity was found in the study characteristics, instruments used, outcome variables and results. Consequently, 7 it was impossible to perform valid quantitative analyses of the data or a subsequent meta- analysis. This equation is often used for estimating sample sizes of laboratory ex- 9 periments. It may not be as accurate as using other methods in estimating sample size, but gives a hint of the appropriate sample size where parameters such as expected standard deviations or expected differences in values between groups are unknown or very hard to estimate (Kirkwood et al. The Mead’s resource equation is: E= N-B-T, where N is the total number of included units (minus 1), T is the number of treatment groups, including the control group, (minus 1), B is the blocking component (minus 1) and E is the degree of freedom, which should be equal to or more than 10. The initial screening of the titles and abstracts resulted in 20 full-text papers that met the inclusion criteria. The table includes a short summary of the study design, the results of the selected studies and the authors’ con- clusions. Implant abutments/bodies with polished/ma- chined surfaces or titanium discs/sheets/cylinders simulating those surfaces were evaluated in eight studies (Gantes & Nilveus 1991; Speelman et al. Pereira da Silva (2005) studied surfaces blasted with aluminium oxide particles of different diameters, and Zablotsky et al. Li- popolysaccharide from Escherichia coli or Porphyromonas gingivalis was used in two studies (Zablotsky et al. Four studies used single-species 2 bioflm, such as Streptococcus mutans (Schmage et al. Eight 3 studies used an in situ model to contaminate titanium surfaces with supragingival plaque by placing titanium discs in splints in the mouth of either beagle dogs (Gantes & Nilveus 1991; Speelman et al. Finally, in one study subgingival plaque was left to accumulate on healing abutments placed in the mouth of patients with implants (Kawashima et al. Non- metal curettes/scalers and rubber cups with pumice were evaluated in two studies (Speelman et al. The air powder abrasive system was the instrument mostly evaluated, as it was tested in nine out of the fourteen included studies (Parham et al. A sodium bicarbonate powder was used in the majority of the studies (Parham et al. Finally, three other powders (TiO2 powder, hydroxyl- apatite sintered powder and calcium phosphate powder) were used in one study (Tastepe et al. None of these cleaning methods created …titanium dental implant surfaces: a systematic review 73 1 a cleanliness score better than 3 and none of them appeared to be superior to the other. In the same study single polishing with a composite bur (Stainbuster®) in combination with sodium bicarbonate powder was found to have the least cleaning potential (score 5), while 2 weekly rubber cup polishing with pumice for 10 s once a day for three months resulted in the highest surface cleanliness (score 1,2). Af- ter one week of plaque accumulation in the mouth of patients that underwent implant treat- ment, the subgingival area of the abutments was treated for 60 s with the three ultrasonic scalers. After instrumentation, the abutments were removed and the amount of remaining plaque and calculus in the mesial proximal area was estimated using the same ranking score as in the study of Speelman et al. The authors reported that all three instruments suc- cessfully removed plaque from the abutment surfaces. This study also evaluated the detoxifying effects of a 30 s application of an air powder abra- 5 sive system with a sodium bicarbonate powder. Group 1 was composed of titanium sheets with a machined surface, and group 2 and 3 of titanium sheets blasted with aluminium oxide particles with different diameters: group 2 was blasted with 65-μm particles (moderate rough surface) and group 3 with 250- μm particles (very rough surface). The colony forming units were counted before and after treatment, and no viable cells were detected after treatment in all of the surfaces …titanium dental implant surfaces: a systematic review 75 1 examined. All powders decreased the initial amount of bioflm signifcantly, although the TiO2 pow- 7 der was not as effcient as the others. All applications resulted in remnants of the powder particles left or impacted on the surface. A 60s treatment of the machined surfaces with the air abrasive resulted in signifcant decrease in the amount of bioflm. The average percentage of residual bioflm in relation to the untreated control was 2.
Skin conditions that occur in people the Social Security Administration at any age buy 2mg requip. It is the Social Security ofﬁce in the state in which a person resides that actually makes the spermatorrhea Abnormally frequent involun- ﬁnal determination as to whether someone quali- tary discharge of semen without orgasm generic 1 mg requip otc. Sometimes medical problems semen is produced by ejaculation of orgasm and is other than those listed merit payments cheap requip 0.25 mg overnight delivery. An attor- not discharged from the man’s body at any other ney can ﬁle claims for the individual who is ill, time. If a man loses the mechanism of ejaculation, and this is usually the best course of action sperm may discharge involuntarily. In a total ejaculate, about 300 to 500 mil- public services that are made available (at no cost lion/ml is considered normal; fewer than 60 mil- or low cost) to those who have sexually transmit- lion/ml equates to sterility, or an inability to ted diseases, as well as people with other health reproduce. Sperm count is unrelated, however, to a socioeconomic impact The way a disease affects man’s virility. The socioeco- nomic impact of sexually transmitted diseases is spermicide An agent that kills spermatozoa absolutely mind-boggling, particularly when one (sperm). The individual 40–44: 136,145 who suspects she or he has a sexually transmitted 45–49: 80,242 disease may not confide in family or friends and 50–54: 42,780 may be even less inclined to talk to a doctor about 55–59: 23,280 the problem. It is often very difficult for patients 60–64: 12,898 to tell their doctors their fears or suspicions that 65 or older: 11,555 they have a sexually transmitted disease; their Adult cases as of December 2001 by exposure reluctance can lead to delayed diagnosis and category: treatment. Recipient of blood transfusion, blood components, or tissue: 5,057 males, 3,914 females Risk not reported or identiﬁed: 57,220 males, stress Stress can play a role in reducing the 23,870 females strength of a person’s immune system, making it more vulnerable to disease, such as infection that Children by exposure category: is sexually transmitted. Stress is also a factor in the Hemophilia/coagulation disorder: 236 global picture of sexually transmitted diseases. Garrett attributes this to “an in Societies under Stress: A Global Perspective,” exploding black market” in other countries, outlining key problems in addressing the spread where peddlers with no medical training are sell- of sexually transmitted diseases in a world where ing antibiotics (some of which were expired the stressors are many, far-reaching, and exten- drugs) that were sent in for humanitarian relief sive. She pointed to problems in public health, and were stolen from Red Cross warehouses. One nationwide survey of health depart- and collect supplemental data on all or a sample ments indicated that the percentage of cases of cases. Sur- format that makes this information usable for all veillance data are key to promoting an improved public health agencies—federal, state, and local. If a person does not receive ade- ted disease that has been called the “great imitator” quate treatment, the infection progresses to the because so many symptoms are indistinguishable secondary stage. The rate of syphilis cases in the spots on the palms of the hands and the bottoms of United States declined by 89. This was the ﬁrst body parts with different characteristics that increase since 1990. Cause These sores contain active bacteria, so it is impera- A very fragile bacterium called Treponema pallidum tive to avoid sexual or nonsexual contact with the causes the disease syphilis, which moves through broken skin of another person during this stage. The The rash, which heals spontaneously in a few time between infection with syphilis and the weeks or months, can be accompanied by low appearance of a symptom averages about 21 days fever, muscle aches, fatigue, headaches, sore but can range from 10 to 90 days. Such symptoms are often mild and may come and Symptoms go during the year or two after initial infection. The early symptoms of syphilis mimic those of Sometimes the rashes are not even noticeable. In many other diseases; that is one reason some peo- secondary syphilis, a person may also have condy- ple do not take the initial sore or odd rash that lomata lata, oral or genital mucous patches, sys- appears seriously. They also disappear soon after they are ﬁrst syphilis can proceed into a latent period—a time seen. In primary syphilis, the sign is often a chan- In both primary and secondary states, when cre—an indurated, punched-out ulcer that is symptoms are present, a person can readily pass painless or only slightly painful and is located at the disease to sex partners. Sometimes there is a single stage of syphilis begins when the secondary sore; other times, many. Untreated, the infected per- “shan-ker”) is the classical first symptom of pri- son still has syphilis even though no signs or mary syphilis, usually a painless open sore that symptoms are apparent at that time, but it shows up on the penis or around or in the vagina. A chancre is typically one to two eyes, heart, blood vessels, liver, bones, and joints. These can appear as This internal damage may show up years later in shallow ulcerations with noninflamed margins; the late, or tertiary, stage of syphilis. Late-stage they occur most commonly on mucous mem- signs are an inability to coordinate muscle move- branes that are irritated during sexual activity. The damage may be serious its own, without scarring, whether or not the per- enough to result in death. All other dromes that suggest early syphilis, other tests latent-syphilis cases, though, are late latent syphilis (biopsy and direct microscopy) may be needed. Testing Serologic ﬁndings are always positive in second- To conﬁrm diagnosis, a doctor looks for signs of ary syphilis. If the syphilitic patient is in the latent syphilis, asks whether the patient has experienced or late stage, a doctor may have to do a spinal tap any of the symptoms, performs blood tests, and to check for infection of the nervous system. The latter is accomplished by taking a can infect and possibly lead to the death of her scraping from the ulcer or chancre to be studied baby, every pregnant woman should be tested for under a special dark-ﬁeld microscope in order to syphilis. Although blood tests do produce false-negative Congenital Syphilis results up to three months after infection, they can Untreated early syphilis during pregnancy results also provide evidence of infection. If infection, the body produces syphilis antibodies the disease is acquired during the four years pre- that can be detected by an inexpensive blood test.
The inside is lined with absorptive material The ear is not equally sensitive at all to keep reverberation low 2 mg requip otc. In a soundproof room cheap requip 0.5mg mastercard, the patient’s ability to Besides pure tone audiometry buy requip 1mg mastercard, a battery of hear pure tones in the frequency range of other audio-logical tests are now being done about 125 to 8000 Hz is measured. Pure tone Pure Tone Audiometry sensitivity can be measured by air conduction and by bone conduction. Audiometer The tester gradually increases the intensity It is an electronic device that consists of a pure of stimulus (pure tone), till it is heard by the tone generator, an amplifier and an attenuator. The process is repeated several times The hearing threshold level numbers along and the intensity at which the subject hears the ordinate are read as “hearing loss in the sound (tone) for 50 per cent of the time, is decibels” at a particular frequency. Audiogram Interpretation The audiogram is a graph showing the Normally both air and bone conduction curves hearing sensitivity for air and bone conduc- superimpose on the graph showing no hearing ted sounds. Conductive deafness: Conductive deafness ted along the abscissa and hearing threshold occurs due to malfunction of the external level in decibels (dB) along the ordinate (Figs or middle ear. The symbol of > is for bone loss the defect lies in the cochlea and neural conduction of the right ear and symbol < for pathways. To evaluate the functional state of the same frequency, and both show equal auditory system at suprathreshold levels losses. To contribute to the localisation of the both air and bone conduction but the specific lesions of the auditory tracts. To assess the value of therapeutic mea- sures such as auditory training or selection 1. It gives a measure of the degree of hearing Various parameters tested in speech loss (quantity). Speech reception threshold: The test material structive and rehabilitative procedures like is recorded live voice. The method can be used to detect malin- bles, both pronounced with equal stress gerers and is useful for medicolegal and effort like tooth brush, aeroplane, purposes. Speech Audiometry The intensity, at which the patient Speech audiometry is aimed at evaluating the identifies 50 per cent of the words and listener’s responses to speech. These are monosyllablic words, which are presented at a level of about 40 dB greater than the individual’s speech reception threshold. The discrimination tests are scored in terms of the percentage of words heard correctly. It assists in rehabilitative measures like instructed to signal when speech is com- fitting of a hearing aid. The listener reports speech as being uncom- average of scores made by patients on these fortable. The result gives the degree of threshold level value subtracted from the handicap that the patient is suffering from. In perceptive deafness in which the loss is Speech Discrimination mainly confined to high tones, there may be considerable discrepancy between the hearing The handicap of hearing loss may consist not for speech and whisper, so the vocal index is only of decrease in sensitivity to sound but high. Moderate decay Suggestive of The tester presents twenty such 1 dB incre- 20-25 dB/minutes retrocochlear ments for each test. The Recruitment number obtained is multiplied by 5 for getting It is a phenomenon which occurs in some the percentage. Loudness grows so rapidly that a tone sounds louder in the impaired ear than in a Tone Decay Test normal ear at the same intensity. A stop-watch is started, test, Fowler’s test) For this test, the hearing which should be stopped when the patient threshold for the poor ear should be at least signals that the tone is no longer heard. A number of seconds for which the tone is heard two-channel audiometer is used for alter- at threshold is recorded. The stop-watch is nating two tones of identical frequency from reset and the level of tone raised by 5 dB one ear to the other. The patient can hear the tone for a full of loudness in the deaf ear with the growth of loudness in the opposite (normal) ear. Normal 0-5 dB Suggestive of slow growth of loudness and is considered as in sixty seconds cochlear deafness pathognomonic of retrocochlear lesion. Automatic It is an automatic audiometer which scans the impedance audiometers are available these patient’s threshold to both continuous and days which scan the patient’s middle ear alternating stimulus. Type I The continuous and interrup- This type of audiometry is helpful in ted tracings overlap (normal diagnosing various middle ear conditions like and conductive deafness). Eustachian tube 1000 Hz, the continuous tracing functioning and acoustic reflexes are also falls below the interrupted elicited by this method (Fig. Such a curve occurs in some Electrocochleography and Evoked cases of sensory hearing loss. Brainstem Evoked Response Type V The continuous tracing lies Audiometry above the interrupted tracing This is a reliable diagnostic neuro-otological (suggestive of non-organic test which can be done even in infants. A series of electrical waves generated at various points in the auditory apparatus Impedance Audiometry (cochlea, cochlear-neurons, superior olive, This is a recent advance in audiometry which lateral lemniscus and inferior colliculus) are includes the measurement of middle ear recorded (Fig. It has greatly canal is varied from –200 mm H2O to +200 mm contributed in two major areas, viz. Five waves Latency abnormalities (fast 100 to 2000 Hz) are seen when the responses 1. Peripheral defect: In peripheral hearing to acoustic clicks are averaged to exclude muscle potentials.
9 of 10 - Review by J. Mannig
Votes: 225 votes
Total customer reviews: 225