An investigation into the need for supplementary steroids in organ transplant patients undergoing gingival surgery. A double-blind, split-mouth, cross-over study

Management of specific medical emergencies in dental practice

In this paper, the actions needed to manage specific medical emergencies are discussed. Each emergency requires a correct diagnosis to be made for effective and safe management. The basis of management in contemporary dental practice avoids the intravenous route where drugs are required to treat the emergency.

Avoiding implant-related complications in medically compromised patients with or without unhealthy lifestyle/Elevated oxidative stress

Increased human life expectancy broadens the alternatives for missing teeth and played a role in the widespread use of dental implants and related augmentation procedures for the aging population. Though, many of these patients may have one or more diseases. These systemic conditions may directly lead to surgical complications, compromise implant/bone healing, or influence long-term peri-implant health and its response to biologic nuisances. Offering patients credible expectations regarding intra- and postoperative complications and therapeutic prognosis is an ethical and legal obligation. Clear identification of potential types of adverse effects, complications, or errors is important for decision-making processes as they may be related to different local, systemic, and technical aspects. Therefore, the present review structures the underlying biological mechanisms, clinical evidence, and clinical recommendations for the most common systemic risk factors for implant-related complications.

Steroid supplementation before minor oral surgical procedures in patients taking long-term glucocorticoids: A triple-blinded, randomized, placebo-controlled trial

BACKGROUND

Patients undergoing long-term glucocorticoid therapy are administered additional glucocorticoids before minor dental procedures, although this is not supported by evidence. The authors designed this study to validate the hypothesis that routine blanket glucocorticoid supplementation is unnecessary during minor oral surgical procedures under local anesthesia.

METHODS

The authors recruited 270 patients into 3 groups (1:1:1 allocation) from the dental outpatient department. Primary outcomes were changes in hemodynamic parameters and frequency of adverse events among the 3 groups. The secondary outcome was the association of preprocedural stress and procedural pain with periprocedural adverse events in the long-term glucocorticoid therapy group (groups I and II).

RESULTS

No clinically relevant changes in hemodynamic parameters among the 3 groups were found. The authors also found low periprocedural adverse events in all 3 groups combined (n = 1), so they did not explore the secondary outcomes further.

CONCLUSIONS

Among patients undergoing long-term glucocorticoid therapy for indications other than primary adrenal insufficiency, elective minor oral surgical procedures can be performed safely with only their daily dose of glucocorticoid when their medical conditions are optimized. Routine additional glucocorticoid supplementation appears unnecessary. The results of the study also revealed opportunities for value addition by means of integrating oral health care with medical follow-up for patients with multiple co-occurring medical conditions.

PRACTICAL IMPLICATIONS

Routine blanket glucocorticoid supplementation among patients taking a long-term glucocorticoid for indications other than primary adrenal insufficiency appears unnecessary before minor oral surgical procedures under local anesthesia. This clinical trial was registered at Clinical Trial Registry-India. The registration number is CTRI/2017/02/007779.

Is Preoperative Adrenal Insufficiency Screening Necessary for Cardiovascular Thoracic Surgery Patients?

Background: The association between adrenal insufficiency (AI) and the treatment outcomes of cardiothoracic surgery patients has been little reported. The aims of this study were to investigate the incidence of AI and to compare the post-surgical outcomes of patients with perioperatively treated AI and patients with a normal adrenal response. Methods: A 1.5-year prospective study was conducted in 98 patients scheduled for cardiothoracic surgery. Patients were categorized as either AI or normal-adrenal-response patients. Those with AI were treated with stress doses of glucocorticoid perioperatively. The post-surgical outcomes of patients with AI and of those with a normal adrenaline response were analyzed using multivariable analysis. Results: The overall incidence of AI was 34.7%. There were no statistically significant differences in post-surgical outcomes, including prolonged hospital stay, postoperative infection, prolonged inotropic drug use and relative AI, between the two groups. Only the rate of hyperglycemia requiring insulin infusion was significantly higher in the AI group than in the non-AI group (OR = 14.15, 95% CI = 1.44-138.60, p = 0.02). Conclusions: The proper diagnosis and management of AI can result in surgical outcomes in AI patients comparable to those of normal-adrenal-response patients. Non-life-threatening hyperglycemia requiring insulin infusion was found only in the AI group.

Perioperative Evaluation and Management of Patients on Glucocorticoids

Myriad questions regarding perioperative management of patients on glucocorticoids (GCs) continue to be debated including which patients are at risk for adrenal insufficiency (AI), what is the correct dose and duration of supplemental GCs, or are they necessary for everyone? These questions remain partly unanswered due to the heterogeneity and low quality of data, studies with small sample sizes, and the limited number of randomized trials. To date, we know that although all routes of GC administration can result in hypothalamic-pituitary-adrenal (HPA) axis suppression, perioperative adrenal crisis is rare. Correlation between biochemical testing for AI and clinical events is lacking. Some of the current perioperative management recommendations based on daily GC dose and duration of therapy may be difficult to follow in clinical practice. The prospective and retrospective studies consistently report that continuing the daily dose of GCs perioperatively is not associated with a higher risk for adrenal crises in patients with GC-induced AI. Considering that oral GC intake may be unreliable in the early postoperative period, providing the daily GC plus a short course of IV hydrocortisone 25 to 100 mg per day based on the degree of surgical stress seems reasonable. In patients who have stopped GC therapy before surgery, careful assessment of the HPA axis is necessary to avoid an adrenal crisis. In conclusion, our literature review indicates that lower doses and shorter duration of supplemental GCs perioperatively are sufficient to maintain homeostasis. We emphasize the need for well-designed randomized studies on this frequently encountered clinical scenario.

Acute abdomen in the immunocompromised patient: WSES, SIS-E, WSIS, AAST, and GAIS guidelines

Immunocompromised patients are a heterogeneous and diffuse category frequently presenting to the emergency department with acute surgical diseases. Diagnosis and treatment in immunocompromised patients are often complex and must be multidisciplinary. Misdiagnosis of an acute surgical disease may be followed by increased morbidity and mortality. Delayed diagnosis and treatment of surgical disease occur; these patients may seek medical assistance late because their symptoms are often ambiguous. Also, they develop unique surgical problems that do not affect the general population. Management of this population must be multidisciplinary.This paper presents the World Society of Emergency Surgery (WSES), Surgical Infection Society Europe (SIS-E), World Surgical Infection Society (WSIS), American Association for the Surgery of Trauma (AAST), and Global Alliance for Infection in Surgery (GAIS) joined guidelines about the management of acute abdomen in immunocompromised patients.

Perioperative glucocorticoid management based on current evidence

Glucocorticoid preparations, adreno-cortical steroids, with strong anti-inflammatory and immunosuppressive effects, are widely used for treating various diseases. The number of patients exposed to steroid therapy prior to surgery is increasing. When these patients present for surgery, the anesthesiologist must decide whether to administer perioperative steroid supplementation. Stress-dose glucocorticoid administration is required during the perioperative period because of the possibility of failure of cortisol secretion to cope with the increased cortisol requirement due to surgical stress, adrenal insufficiency, hemodynamic instability, and the possibility of adrenal crisis. Therefore, glucocorticoids should be supplemented at the same level as that of normal physiological response to surgical stress by evaluating the invasiveness of surgery and inhibition of the hypothalamus-pituitary-adrenal axis. Various textbooks and research articles recommend the stress-dose of glucocorticoids during perioperative periods. It has been commonly suggested that glucocorticoids should be administered in an amount equivalent to about 100 mg of cortisol for major surgery because it induces approximately 5 times the normal secretion. However, more studies, with appropriate power, regarding the administration of stress-dose glucocorticoids are still required, and evaluation of patients with possible adrenal insufficiency and appropriate glucocorticoid administration based on surgical stress will help improve the prognosis.

Impact of glucocorticoid supplementation on reducing perioperative complications in patients on long-term glucocorticoid medication: A propensity score analysis using a nationwide inpatient database

BACKGROUND

Perioperative glucocorticoid supplementation has been suggested as a potentially effective precaution against perioperative adrenal crisis in patients on long-term glucocorticoid medication.

METHODS

This retrospective cohort study used a national inpatient database in Japan. We included patients who underwent general surgery and those who received long-term glucocorticoid medication before surgery. A one-to-one propensity score-matched analysis was performed to compare patients who received 100 mg hydrocortisone during surgery with those who received no supplementation. The primary outcome was use of vasopressor agents on the day of surgery. The secondary outcomes included bleeding, perioperative infection, wound dehiscence, postoperative length of stay, and in-hospital mortality.

RESULTS

Among the 807 propensity score-matched pairs, there was no significant difference in use of vasopressor agents between patients with and without glucocorticoid supplementation (24.5% vs. 21.9%; P = 0.22) and no significant differences in any secondary outcomes.

CONCLUSIONS

Perioperative glucocorticoid supplementation was not associated with decreased morbidity or mortality.

Implant treatment in immunosuppressed renal transplant patients: A prospective case-controlled study

OBJECTIVES

The aim of this clinical study was to evaluate long-term outcomes of implant therapy in a cohort of immunosuppressed renal transplant patients compared with a matched control group.

MATERIAL AND METHODS

Pharmacologically immunosuppressed renal transplant patients received dental implant treatment between 2001 and 2011. Periodontal, clinical and radiographic parameters were prospectively measured with a mean follow-up of 116.8 months (range from 84 to 192 months). A matched controlled non-transplant sample receiving similar implant treatment in the same time was included as a control group.

RESULTS

Implant survival rate was over 98% in both test and control groups (100% and 98.84%, respectively). Peri-implant mucositis was diagnosed in 46.80% of the implants in the study group and in 48.80% in the control group. Peri-implantitis occurred in 5.10% of the implants in the study group and in 8.10% of the controls. Wound healing and post-operative pain were similar in both groups.

CONCLUSIONS

Despite the limitations of this study, pharmacological immunosuppression in renal transplant patients did not affect implant outcomes. Renal transplant patients should be carefully controlled periodically after implant treatment.

CLINICAL IMPLICATIONS

The results from this investigation justify the use of dental implants for the dentalrehabilitation of immunosuppressed patients after renal transplantation provided they follow the necessarylong-term monitoring and regular maintenance of their oral and systemic health.

Perioperative "stress dose" of corticosteroid: Pharmacological and clinical perspective

Various exogenous steroid preparations have been in use for a wide range of indications. We, as an anesthesiologist often encounters a surgical patient receiving chronic steroid therapy. Perioperative use of steroid is associated with major complications such as full-blown adrenal crisis in the perioperative period due to the secondary adrenal insufficiency. Henceforth, comes the role of the perioperative “stress-dose” of steroids to mitigate this rare but potentially fatal complication. There have been opposing views regarding the need and the appropriate dosage of the perioperative steroids. The present review discusses the changing concept of perioperative “stress dose” of corticosteroids, its pharmacokinetics, clinical relevance, and the related controversies such as the need and the appropriate dose.

Nonsurgical periodontal treatment and prosthetic rehabilitation of a renal transplant patient with gingival enlargement: a case report with 2-year follow-up

Background

Drug-induced gingival enlargement is a common condition which can be observed in patients taking immunosuppressive medications following organ transplant surgery. The disfiguring excessive tissue often hinders proper oral hygiene practices, therefore accompanied by periodontitis, tooth mobility, and even pathological tooth migration in extreme cases. This case report presents a conservative treatment protocol for a patient with the aforementioned conditions involving neither surgical nor orthodontic intervention. Few related studies have reported such a noninvasive protocol for managing these kinds of conditions.

Case presentation

A 51-year-old woman presented with bleeding gingiva, mobile teeth and complained of chewing difficulties. She had undergone renal transplant surgery 16 years prior to this dental visit and had been taking immunosuppressive drugs including cyclosporine ever since. After clinical and radiographic examinations, the patient was diagnosed with drug-induced gingival enlargement, pathological tooth migration, severe periodontitis, and missing teeth. Through careful and meticulous nonsurgical debridement, oral hygiene instruction, tooth extraction, and occlusal adjustment, the patient’s periodontium was restored to a healthy state without surgical intervention. Moreover, the patient’s chewing function was restored by means of removable partial dentures. Good adaptation of prostheses and satisfaction with overall treatment outcomes were reported.

Conclusions

Through proper diagnosis, treatment, and with good patient cooperation, complex systemic and dental problems can be managed conservatively without invasive surgeries to attain a stable periodontium and eventually, occlusal function could be restored.

Perioperative corticosteroid administration: a systematic review and descriptive analysis

Background

Perioperative administration of corticosteroid is common and variable. Guidelines for perioperative corticosteroid administration before non-cardiac non-transplant surgery in patients with current or previous corticosteroid use to reduce the risk of adrenal insufficiency are lacking. Perioperative use of corticosteroid may be associated with serious adverse events, namely hyperglycemia, infection, and poor wound healing.

Objective

To determine whether perioperative administration of corticosteroids, compared to placebo or no intervention, reduces the incidence of adrenal insufficiency in adult patients undergoing non-cardiac surgery who were or are exposed to corticosteroids.

Methods

We searched MEDLINE via Ovid and PubMed, EMBASE via Ovid, and the Cochrane Central Register of Controlled Trials, all from 1995 to January 2017.

Selection criteria

We included randomized controlled trials (RCTs), cohort studies, case-studies, and systematic reviews involving adults undergoing non-cardiac non-transplant surgery and reporting the incidence of postoperative adrenal insufficiency.

Data collection and analysis

Two authors independently assessed studies' quality and extracted data. A descriptive and bias assessment analysis was performed.

Results

Two RCTs (total of 37 patients), five cohort studies (total of 462 patients), and four systematic reviews were included. Neither RCT showed a significant difference in the outcome. This result was like that of the five cohort studies. The quality of the evidence was low.

Conclusion

The current use of perioperative corticosteroid supplementation to prevent adrenal insufficiency is not supported by evidence. Given the significant studies' limitations, it is not possible to conclude that perioperative administration of corticosteroids, compared to placebo, reduces the incidence of adrenal insufficiency.

Stress Dose Steroids: Myths and Perioperative Medicine

Perioperative medication management for patients with systemic autoimmune inflammatory diseases has focused on strategies to improve outcomes and mitigate risks. The emphasis has been to minimize the risk of infection associated with most antirheumatic medications, while attempting to avoid flares of disease precipitated by medication withdrawal. Management of glucocorticoids in the perioperative period has been based on an assumption that supraphysiologic increases in dose were always necessary to avoid hypotension and shock in glucocorticoid treated patients, and alternative strategies were rarely considered despite the known infectious, metabolic, and wound healing risks associated with glucocorticoid administration. This paper will review current recommendations for perioperative glucocorticoid administration for glucocorticoid treated patients with systemic inflammatory autoimmune diseases and discuss glucocorticoid physiology to analyze the basis for these recommendations and consider alternative perioperative management strategies.

Perioperative Steroid Management

Perioperative stress-dose steroid administration remains a controversial topic, with recent studies questioning its necessity. We discuss the current literature, largely published in nonanesthesiology journals, and suggest a practical approach to perioperative steroid management.

General medicine and surgery for dental practitioners: part 3. Management of specific medical emergencies in dental practice

In this paper, the actions needed to manage specific medical emergencies are discussed. Each emergency requires a correct diagnosis to be made for effective and safe management. Contemporary management in dental practice avoids the intravenous route when drugs are required to treat the emergency.

Essentials of medical history-taking in dental patients

The starting point in the assessment and management of any patient is dependent on good history-taking. The main parts of the history-taking process well known to practitioners are the presenting complaint, the history of the presenting complaint and the current and past medical history. This paper concentrates on those aspects of the process that are particularly important to dental practitioners. Clinical Relevance: The cornerstone of safe and effective patient management lies with the history. This paper describes various aspects of history-taking and highlights important areas.

Perioperative corticosteroid management for patients with inflammatory bowel disease

Guidelines on the appropriate use of perioperative steroids in patients with inflammatory bowel disease (IBD) are lacking. As a result, corticosteroid supplementation during and after colorectal surgery procedures has been shown to be highly variable. A clearer understanding of the indications for perioperative corticosteroid administration relative to preoperative corticosteroid dosing and duration of therapy is essential. In this review, we outline the basic tenets of the hypothalamic-pituitary-adrenal (HPA) axis and its normal response to stress, describe how corticosteroid use is thought to affect this system, and provide an overview of the currently available data on perioperative corticosteroid supplementation including the limited evidence pertaining to patients with inflammatory bowel disease. Based on currently existing data, we define "adrenal suppression," and propose a patient-based approach to perioperative corticosteroid management in the inflammatory bowel disease population based on an individual's historical use of corticosteroids, the type of surgery they are undergoing, and HPA axis testing when applicable. Patients without adrenal suppression (<5 mg prednisone per day) do not require extra corticosteroid supplementation in the perioperative period; patients with adrenal suppression (>20 mg prednisone per day) should be treated with additional perioperative corticosteroid coverage above their baseline home regimen; and patients with unclear HPA axis function (>5 and <20 mg prednisone per day) should undergo preoperative HPA axis testing to determine the best management practices. The proposed management algorithm attempts to balance the risks of adrenal insufficiency and immunosuppression.

Perioperative stress-dose steroids

Supraphysiologic corticosteroid doses have routinely been considered the perioperative standard of care over the past six decades for patients on long-term steroid therapy. However, the accumulation of data over this period is beginning to suggest that such a practice may not be necessary. The majority of these studies are retrospective reviews or small prospective cohorts, but there are two small prospective, randomized placebo-controlled trials, one prospective primate trial, and several systematic reviews addressing the issue. Based on this developing evidence, patients on long-term exogenous steroids do not require high-dose perioperative corticosteroids and should instead remain on their baseline maintenance dose, with the understanding that secondary adrenal insufficiency should be considered for unexplained perioperative hypotension in these patients.

Common medical illnesses that affect anesthesia and their anesthetic management

Patients undergoing an office-based anesthetic require a thorough preoperative evaluation to identify medical illnesses and undertake appropriate investigations or studies. This article addresses common medical illnesses seen in oral surgery offices and provides insight into their anesthetic management, concentrating on open-airway office-based anesthesia.

WITHDRAWN: Supplemental perioperative steroids for surgical patients with adrenal insufficiency

July 30 2020: This Cochrane Review has been withdrawn from publication. The review was temporarily withdrawn in 2013. Cochrane Anaesthesia has now decided to permanently withdraw the review. Cochrane Anaesthesia intends to publish a new review on this topic in the future. 

October 17 2013: Following comments received via direct correspondence which have challenged the eligibility criteria and interpretation of the evidence summarized in this review, the CARG editorial team has decided to temporarily withdraw the review from the CDSR whilst the comments are considered further and addressed.

The editorial group responsible for this previously published document have withdrawn it from publication.

Dental implants in the medically compromised patient

OBJECTIVE

It has been suggested that some local and systemic factors could be contraindications to dental implant treatment. The objective of this paper was to evaluate whether success and survival rates of dental implants are reduced in the medically compromised patient.

DATA/SOURCES

An extensive literature search was conducted using PubMed/Medline, Scopus, Scirus and Cochrane databases up to November 8, 2012.

CONCLUSIONS

There are very few absolute medical contraindications to dental implant treatment, although a number of conditions may increase the risk of treatment failure or complications. The degree of systemic disease-control may be far more important that the nature of the disorder itself, and individualized medical control should be established prior to implant therapy, since in many of these patients the quality of life and functional benefits from dental implants may outweigh any risks.

Supplemental perioperative steroids for surgical patients with adrenal insufficiency

BACKGROUND

Adrenal crisis is a life threatening condition which can be induced by stress during surgery in patients with adrenal insufficiency. This may be prevented by perioperative administration of high doses of steroids. There is disagreement on whether supplemental perioperative steroids are required and, when administered, on the amount and frequency of doses. The review was originally published in 2009 and was updated in 2012.

OBJECTIVES

To assess whether it is necessary to administer supplemental perioperative steroids in adult patients on maintenance doses of glucocorticoids because of adrenal insufficiency.

SEARCH METHODS

We searched the Cochrane Central Register of Controlled Trials (CENTRAL) (The Cochrane Library 2012, Issue 2); MEDLINE (1966 to February 2012); EMBASE (1980 to February 2012); LILACS (1982 to May 2012); and the databases of ongoing trials. We handsearched the Journal of Clinical Endocrinology and Metabolism (1982 to 2008), Clinical Endocrinology (1972 to 2008), Surgery (1948 to 1994), Annals of Surgery (1948 to 1994), and Anaesthesia (1948 to 2001). The original search was performed in January 2009.

SELECTION CRITERIA

We included randomized controlled trials that compared the use of supplemental perioperative steroids to placebo in adult patients on maintenance doses of steroids and who required surgery.

DATA COLLECTION AND ANALYSIS

Two review authors independently assessed trial quality and extracted data. Study authors were contacted for missing information. We used mean differences and standard deviations to summarize the data for each group.

MAIN RESULTS

Two trials involving 37 patients were included. These studies reported that supplemental perioperative steroids were not required during surgery for patients with adrenal insufficiency. Neither study reported any adverse effects or complications in the intervention and control groups. Both studies were graded as having a high risk of bias.

AUTHORS' CONCLUSIONS

Owing to the small number of patients, the results may not be representative. Based on current available evidence, we are unable to support or refute the use of supplemental perioperative steroids for patients with adrenal insufficiency during surgery.

General medicine and surgery for dental practitioners. Part 4 - skin disorders part B

Skin disorders are potentially important to dentists in diverse ways. The skin disease itself might have oral manifestations, and drugs used to treat skin disorders may impact on dental management. This second paper on skin disorders continues with a consideration of those disorders, and aspects of their treatment, which could have relevance to dental practitioners.

Supplemental perioperative steroids for surgical patients with adrenal insufficiency

BACKGROUND

Adrenal crisis is a life threatening condition which can be induced by stress during surgery in patients with adrenal insufficiency. This may be prevented by perioperative administration of high doses of steroids. There is disagreement on whether supplemental perioperative steroids are required and, when administered, on the amount and frequency of doses.

OBJECTIVES

To assess whether it is necessary to administer supplemental perioperative steroids in adult patients on maintenance doses of glucocorticoids because of adrenal insufficiency.

SEARCH STRATEGY

We searched the Cochrane Central Register of Controlled Trials (CENTRAL) (The Cochrane Library 2009, Issue 1); MEDLINE (1966 to January 2009); EMBASE (1980 to January 2009); LILACS (1982 to January 2009); and the databases of ongoing trials. We handsearched the Journal of Clinical Endocrinology and Metabolism (1982 to 1997), Clinical Endocrinology (1972 to 1997), Surgery (1948 to 1994), Annals of Surgery (1948 to 1994), and Anaesthesia (1948 to 2000).

SELECTION CRITERIA

Randomized, controlled trials that compared the use of supplemental perioperative steroids to placebo in adult patients on maintenance doses of steroids who required surgery.

DATA COLLECTION AND ANALYSIS

Two review authors independently assessed trial quality and extracted data. Study authors were contacted for missing information. We used mean differences and standard deviations to summarize the data for each group.

MAIN RESULTS

Two trials involving 37 patients were included. These studies reported that supplemental perioperative steroids were not required during surgery for patients with adrenal insufficiency. Neither study reported any adverse effects or complications in the intervention and control groups.

AUTHORS' CONCLUSIONS

Owing to the small number of patients, the results may not be representative. Based on current available evidence, we are unable to support or refute the use of supplemental perioperative steroids for patients with adrenal insufficiency during surgery.

Perioperative glucocorticosteroid supplementation is not supported by evidence

Ever since the first descriptions of adrenal insufficiency following exogenous supplementation physicians dread to abolish perioperative glucocorticosteroid supplementation. Now, 55 years after the first publications we can challenge those first reports. However, these cases have resulted in the supplementation of supraphysiological doses of glucocorticosteroids to patients that use exogenous corticosteroids: the so-called perioperative glucocorticosteroid supplementation or "(gluco)corticosteroid stress scheme". It is very questionable whether a dose that exceeds the normal daily production of 5.7 mg cortisol per square meter of body surface area is necessary to prevent perioperative hypotension. Retrospective, prospective and randomised studies, though all methodologically flawed, are discussed and show that continuation of the "basal" amount of glucocorticosteroids is sufficient to counterbalance surgical stress. The current and rather defensive strategy of perioperative supraphysiological glucocorticosteroid supplementation is not embedded in medical evidence. Additionally, high doses of glucocorticosteroids have disadvantages that should not be ignored.

Medical emergencies in the dental practice

Medical emergencies occurring in dental practice can be alarming. The keys to minimizing alarm are taking a thorough history so that possible emergencies can be, to some extent, anticipated, and having a good working knowledge of how to manage emergencies, should they arise.

Dental endosseous implants in the medically compromised patient

The literature contains numerous observations on the significance of systemic disorders as contraindications to dental endosseous implant treatment, but the justification for these statements is often apparently allegorical. Although implants are increasingly used in healthy patients, their appropriateness in medically compromised patients is less equivocal. Perhaps surprisingly, the evidence of their efficacy in these groups of patients is quite sparse. Indeed, there are few if any randomized controlled trials (RCTs) in this field. Furthermore, any health risks from the placement of implants are unclear. We review the current evidence for the risks associated with endosseous implants in a range of systemic disorders. There is clearly a need for prospective systematic trials. The degree of disease-control may be far more important that the nature of the disorder itself, and individualized assessment, including the medical condition, quality of life and life expectancy is indicated. The benefits of implants to many of these patients may outweigh any risks. However, proper informed consent is mandatory.

Human diseases - the Newcastle experience

The second edition of The first five years, published by the General Dental Council in 2002, identifies human diseases as a specific subject to be taught as part of the BDS curriculum. It states clearly the particular learning outcomes of such a course and then identifies a range of subjects (pathology, microbiology, medicine, surgery, pharmacology, therapeutics, accident and emergency services and medical emergencies) which should constitute the programme. Previously, many of these topics were taught and examined separately. In this article, we would like to share the Newcastle experience of developing a course in human diseases alongside the GDC guidelines.

Pharmaceutical prescribing for children. Part 6. Dental management and prescribing for the immunocompromised child

This paper is the sixth in a series on the prescribing of medicines for children by dentists working in primary care. It deals with the dental management and prescribing of medicines for the immunocompromised child. It differs from previous papers in the series in that, apart from the prescription of medicaments such as fluoride supplements and chlorhexidine mouthwashes, most medication for this group of children is prescribed by specialists working in secondary care rather than by primary dental care practitioners.

Steroid cover for dental patients on long-term steroid medication: proposed clinical guidelines based upon a critical review of the literature

Based to a great extent upon mainly anecdotal case reports and theory, there is a general acceptance that patients on long-term systemic steroid medication should receive supplementary glucocorticoids or "steroid cover" when undergoing certain types of stressful treatment including dentistry. The theoretical basis to this practice is that exogenous steroids suppress adrenal function to an extent that insufficient levels of cortisol can be produced in response to stress, posing the risk of acute adrenal crisis with hypotension and collapse. The purpose of this paper is to review relevant literature and propose clinical guidelines for dental practitioners. Of numerous reported cases of adrenal crisis following procedural interventions, few stand up to critical evaluation. Other reviewers have reached similar conclusions. A number of studies confirm the low likelihood of significant adrenal insufficiency even following major surgical procedures. Various authors have suggested modified guidelines for management of patients on steroid medications. Patients on long-term steroid medication do not require supplementary "steroid cover" for routine dentistry, including minor surgical procedures, under local anaesthesia. Patients undergoing general anaesthesia for surgical procedures may require supplementary steroids dependent upon the dose of steroid and duration of treatment.

Dentistry and the medically compromised patient

Certain medical conditions and their accompanying drug treatment do have an impact upon oral structures and the delivery of dental care. Recent evidence suggests that oral health could be a significant risk factor for coronary artery disease. Many medical conditions can affect dental care are often over-stated and lack an evidence base. Examples include the need for antibiotic cover in patients at risk from infective endocarditis and the necessity to provide supplementary corticosteroids for those patients on longterm steroid therapy. By contrast, certain systematic drug treatments can have a profound affect on the oral tissue. The most obvious is drug-induced gingival overgrowth. Drugs frequently implicated in this unwanted effect include phenytoin, ciclosporin and the calcium channel blockers. Several risk factors for drug-induced overgrowth have been identified and include age, sex, peridontal variables and a range of drug pharmacokinetic variables. The relationship between oral health and coronary artery disease opens up a potentially new vista for the delivery of oral care. Although the association is convincing, casualty has not been established. If casualty for this relationship can be confirmed then the delivery of dental care and the promotion of oral health will receive a significant impetus.

Preservation of the negative image of tooth enamel with dental impression material enhances morphometric measurements of gingival overgrowth

Gingival overgrowth is a common health problem caused by genetic and environmental risk factors. Animal models for quantitative histological studies are needed to uncover genetic predisposition and dose-response data that might put individuals at increased risk for gingival disease. Gingival height, thickness, inflammation, and the degree of encroachment of gingiva over the tooth, are clinical measures of overgrowth; most of these parameters can be measured histologically, but in order to quantify gingival coverage of the tooth, the image of the crown must be present. Tooth and bone typically require decalcification for histology; thus, the tooth crown, a critical landmark, is lost. We describe a method for imaging the crown histologically, using impression materials applied to dissected mouse mandibles. Four dental alginates, three polyvinyl siloxanes, and one polyether and gelatin were used. The impression-material/mandibular tissue blocks were processed routinely. Polyvinyl siloxanes were incompatible with embedding resin; alginates, polyether and gelatin could be fixed, decalcified, embedded, and sectioned. Alginates and gelatin could be stained. Success in imaging the tooth crown varied with the preparation, but the alginates, polyether, and gelatin permitted a useful degree of measurement of exposed crown and enamel thickness, along with other morphometric parameters such as thickness of the dentin, lateral mandibular ramus, rete pegs, height of the gingiva, and volume density of vessels and inflammatory cells in the lamina propria. In conclusion, this new application for impression materials allows gingival coverage of tooth crown, as well as numerous other parameters to be measured for comparison with clinical data.